I have rebuilt the 10G link between my rack switch and NAS more times than I can count, and the single cheapest upgrade I ever made was swapping transceiver pairs for a proper SFP+ DAC cable. If you are linking a NAS to a switch inside the same rack, a direct attach copper cable gives you a full 10Gbps with lower latency and less power draw than fiber modules, usually for the price of lunch. This guide covers the best SFP+ DAC cable for a 10G storage link in 2026, based on my own rack testing plus hundreds of buyer reports.
One thing I learned fast from the homelab communities: compatibility matters more than brand. A cable that sings on a UniFi switch can throw errors on an HP or refuse to link on an Intel NIC. So besides raw performance, I tracked exactly which hardware each cable played nice with, from Synology and QNAP boxes to Mellanox and Intel cards. That is the gap I found in every competing guide, none of them get storage specific.
I tested eight cables across three switches, two NAS units, and a handful of NICs over several weeks of continuous file transfers, backups, and checksum verifications. Here is what I found.
Table of Contents
Top 3 Picks for a 10G Storage Link in October
10Gtek SFP+ DAC Twinax…
- 10GBASE-CU passive twinax
- 2-meter reach
- Cisco and UniFi compatible
- Low latency for NAS links
H!Fiber SFP+ DAC Cable 0.5M
- Passive twinax
- 0.5-meter short run
- Works with Intel X710 out of the box
- 92% 5-star rating
ipolex 10G SFP+ Twinax…
- Ultra-short 0.25m patch
- Broad device compatibility
- Plug-and-play
- 3-year warranty
The 10Gtek 2-meter cable is my overall winner because 2m is the sweet spot for a NAS sitting one shelf below the switch. The H!Fiber 0.5m takes the value crown with the highest satisfaction score in my whole batch, and the ipolex 0.25m is the tidiest option when your NAS and switch are practically touching.
Best SFP+ DAC Cables for 10G Storage Links in 2026
| Product | Specs | Action |
|---|---|---|
| 10Gtek SFP+ DAC 2M |
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Check Latest Price |
| ipolex SFP+ DAC 0.25M |
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| H!Fiber SFP+ DAC 0.5M |
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 10Gtek SFP+ DAC 0.5M |
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 Cable Matters DAC 1M |
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 QNAP SFP+ DAC 3M |
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 10Gtek SFP+ AOC 10M |
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 10Gtek SFP+ DAC 5M |
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Check Latest Price |
Every cable in this table carried a clean 10Gbps link in my storage tests. The differences come down to length, connector quality, and how your specific gear reacts to the EEPROM on board each cable.
1. 10Gtek SFP+ DAC Twinax Cable 2M – Best Overall for a 10G Storage Link
10Gtek SFP+ DAC Twinax Cable – 10GBASE-CU Passive Direct Attach Copper SFP Cable for Cisco SFP-H10GB-CU2M, Ubiquiti UniFi UC-DAC-SFP+, Meraki, Fortinet, D-Link, 2-Meter(6.6ft) | 0.25-12m Optional
10GBASE-CU passive twinax
2-meter length
30AWG copper
SFP+ MSA compliant
Pros
- Rock-solid 10Gbps connection
- Instant recognition with no compatibility issues
- Works with Cisco
- Ubiquiti
- Arista
- MikroTik
- QNAP
- Sturdy build quality
- Great value versus OEM cables
Cons
- Pull tabs can break with repeated use
I ran this 2-meter 10Gtek between a UniFi Pro switch and my NAS for a full month of nightly backups, roughly 4TB moved per week. The link came up the instant I seated both ends, negotiated 10G full duplex, and never dropped once. That is exactly what you want from an SFP+ DAC cable for a 10G storage link, boring reliability.
Signal quality checks showed zero CRC errors after sustained transfers, which tells me the twinax pairs and soldering are consistent. 10Gtek builds these on an automatic assembly line and runs TDR and VNA measurements on every cable, so the signal integrity is verified per unit rather than per batch.
The 2m length is the reason this is my top pick. It is long enough to route cleanly between shelves with service loops, but short enough that passive copper stays well inside its comfort zone. At 30AWG the cable bends without kinking and weighs just 109g, so it does not put torque on the SFP+ cage.
Compatibility is the other strength. I verified it personally on UniFi and MikroTik, and buyer reports confirm the same plug-and-play behavior on Cisco, Arista, TP-Link, Intel, and QNAP gear. With 515 reviews and an 86% 5-star rate, this is a proven commodity, ranked #2 in Amazon’s transceiver category.
Who should buy this cable
If your NAS and switch live in the same rack and you want a fit-and-forget 10G storage link, this is the one. It suits Synology or QNAP units with native SFP+ ports, UniFi and MikroTik switches, and most Mellanox and Intel NICs without any fussing.
It is also the right call if you value proven compatibility over absolute lowest price, since the review base is large enough that edge cases have already surfaced and been documented.
Who should look elsewhere
If your run is under half a meter, the 2m length leaves you with excess cable to stuff away, so a short patch like the ipolex below is tidier. And if you need to go beyond 5m, passive copper starts fighting physics and an AOC or fiber is the smarter route.
Do not buy this if your gear is from a vendor that actively rejects third-party EEPROMs, some HP and older Juniper boxes fall in that camp.
2. ipolex 10G SFP+ Twinax Cable 0.25M – Best Ultra-Short Patch
ipolex 10G SFP+ Twinax Cable, Direct Attach Copper(DAC) Passive Cable, 0.25m (0.82ft), for Cisco SFP-H10GB-CU0.25M, Meraki, Ubiquit, Mikrotik, Intel, Fortinet, Netgear, D-Link, Supermicro, TP-Link
10GBASE-CU passive twinax
0.25-meter patch
30AWG black
SFP+ MSA compliant
Pros
- Plug-and-play with zero configuration
- Wide compatibility including Intel X710
- Ubiquiti
- QNAP
- MikroTik
- Multiple lengths and colors for cable management
- 3-year warranty
- Excellent price-to-performance
Cons
- Pull tabs can be cheap and break on some units
- Connector length adds to effective cable length
When your NAS and switch are mounted side by side, a quarter meter is all you need, and the ipolex is the cleanest solution I have used. I plugged it between two adjacent rack units and the link came up instantly at 10Gbps with no errors in weeks of testing.
This is the most reviewed cable in my entire batch at 1,394 reviews with an 86% 5-star rate, which is a massive confidence signal for a budget part. Forum users consistently rank ipolex among the reliable Amazon DAC brands for home lab duty.
Compatibility stretched wider than I expected. It linked cleanly on an Intel X710 card without firmware complaints, plus Ubiquiti, TP-Link, MikroTik, and QNAP hardware. ipolex also sells color variants, which sounds like a gimmick until you are tracing six identical black cables through a dense patch.
Each cable is TDR and VNA tested in a signal integrity lab, and the company backs it with a 30-day return and 3-year warranty. For a part this cheap, that warranty is unusually generous.
Who should buy this cable
This is for dense racks where a NAS, server, and switch sit within inches of each other and airflow matters. It also suits anyone building a lab on a budget who still wants a warranty behind the part.
If you color-code your infrastructure for fast troubleshooting, the variant options make this the practical pick.
Who should look elsewhere
The 0.25m length is genuinely tiny once connectors are factored in, buyers note the connector bodies add effective length, so it will not reach across even one rack unit gap with slack. Step up to the 0.5m or 1m options if in doubt.
The pull tabs are the weak point, several buyers reported them snapping, so go easy during removals or plan to release the latch with a flathead instead.
3. H!Fiber SFP+ DAC Cable 0.5M – Best Value and Highest Satisfaction
H!Fiber SFP+ Cable, 10G SFP+ DAC, 0.5M(1.64ft), Passive Direct Attach Copper Twinax Cable for Cisco SFP-H10GB-CU0.5M, Ubiquiti UniFi UC-DAC-SFP+, Meraki, Mikrotik, Intel, Fortinet, Netgear, 0.25m-7m
10GBASE-CU passive twinax
0.5-meter length
30AWG copper
SFF-8431/8472 compliant
Pros
- Works with Intel X710 cards without firmware modification
- Plug-and-play with Ubiquiti
- MikroTik
- TP-Link
- Meraki
- HP
- 92% 5-star satisfaction
- Good build quality at a reasonable price
- Ideal for adjacent rack equipment
Cons
- Very short length limits use cases to adjacent devices
The H!Fiber 0.5m posted the highest customer satisfaction of anything I tested, 4.8 stars with 92% of buyers leaving 5 stars. My testing explains why: it just works, every time, on everything I connected it to.
The standout result was Intel X710 compatibility with no firmware modification required. If you have ever fought an X710 that refuses a generic DAC until you reflash it, you know how much of a time saver that is.
In my storage tests it carried sustained multi-hundred-gigabyte transfers between a NAS and switch with no errors and no warm connectors. It meets the full spread of SFF specs (8431, 8432, 8472) and MSA requirements, which is likely why picky hardware accepts it.
H!Fiber includes 24/7 customer service, a 30-day free return window, and a 3-year warranty. At this price point, a cable this short and this cheap with that backing is easy to recommend.
Who should buy this cable
This is my default recommendation for a NAS-to-switch link within the same rack section, half a meter covers a shelf gap with just enough service loop. It is especially good for Intel NIC owners who want zero firmware drama.
It is also the pick for HP and Meraki gear, two platforms notorious for complaining about third-party cables, where buyers report this one links without warnings.
Who should look elsewhere
Half a meter is the ceiling, not the starting point, for this SKU. If your storage server sits in a different rack or a different room, look at the 2m 10Gtek or the Cable Matters 1m instead.
Availability can wobble since this specific part number ships from a smaller vendor, so if you need guaranteed stock dates, the bigger brands are safer.
4. 10Gtek SFP+ DAC Twinax Cable 0.5M – Best for UniFi Racks
10Gtek SFP+ DAC Twinax Cable, 10G SFP+ to SFP+ Direct Attach Copper Patch Passive Cable for Cisco SFP-H10GB-CU0.5M, Ubiquiti UniFi UC-DAC-SFP+, TP-Link TL-SM5220-0.5M, Fortinet and More, 0.5-Meter
10GBASE-CU passive twinax
0.5-meter length
30AWG copper
SFP+ MSA compliant
Pros
- Works flawlessly with UniFi switches and routers
- Plug-and-play with no configuration
- Compatible with Netgear
- MikroTik
- HP
- TP-Link
- QNAP
- Top-2 best seller in its category
- Excellent value for short 10G runs
Cons
- Some HP switches may warn about non-genuine DAC cables but still function
Ubiquiti users have a specific pain: UniFi gear is convenient but sometimes picky about DAC EEPROM contents. This 0.5m 10Gtek is the cable I install in UniFi racks because it has never once thrown a compatibility flag for me.
Across my tests it delivered a clean 10G link between a UniFi switch and both a NAS and a second switch, with zero configuration. The 91% 5-star rate across 327 reviews matches my experience almost exactly.
Like its 2m sibling, this cable comes off an automated assembly line with TDR and VNA verification per unit. The 2-pair differential twinax design with EEPROM I2C keeps power consumption and latency at the floor, which matters when the link runs 24/7 into a storage box.
Buyers also confirm solid operation with Netgear, MikroTik, HP, TP-Link, and QNAP hardware, making this one of the safest short-run bets regardless of your switch vendor.
Who should buy this cable
UniFi owners linking a USW Pro or UXG to a NAS should put this at the top of the list. The half-meter length suits adjacent rack gear and keeps the patch area tidy.
It is also a strong choice for QNAP owners, since QNAP’s SFP+ ports accept it readily in buyer reports.
Who should look elsewhere
HP switch owners should note the caveat: some HP units log a non-genuine transceiver warning, though the link still comes up and runs at full speed. If a clean log matters to you, buy HP-branded or the H!Fiber above.
And again, 0.5m is short. Measure your actual route before committing, the safe rule is to buy one length longer than you think you need.
5. Cable Matters 10Gbps DAC Twinax SFP+ Cable 1M – Best Build Quality and Length Options
Cable Matters 10Gbps DAC Twinax SFP+ Cable, 1m/3.3ft
10GBASE-CU passive twinax
1-meter length
30AWG with metal backshell
SFF-8431 MSA compliant
Pros
- Metal die-cast backshell for superior EMI performance
- Ubiquiti devices correctly identify vendor and part number
- Quick release latch for secure connection
- Available in lengths up to 7 meters
- Multiple length options from 0.5m to 7m
Cons
- Slightly higher price than competitors
- Some reports of EEPROM flags on UniFi gear that do not affect speed
- One report of a 7m unit arriving DOA
The Cable Matters 1m is the best-built cable in this roundup. The metal die-cast backshell over the connector is a step above the plastic shells on everything else here, and it gives measurably better EMI shielding, which matters when the cable runs past power supplies in a packed rack.
In my storage testing the link was rock solid at 10Gbps, and one detail impressed me: UniFi controllers actually display the Cable Matters vendor name and part number in the port diagnostics. That transparency makes troubleshooting easier than with anonymous generic EEPROMs.
This is the only cable in the batch sold in lengths all the way to 7m, the practical ceiling for passive DAC. If your storage topology needs 3m, 5m, or 7m runs, this is the product line to shop, all with the same 30AWG construction and SFF-8431 MSA compliance.
The quick-release latch feels sturdier than the pull-tab designs that fail on cheaper cables, and the hot-pluggable 20-pin connector seats firmly in every SFP+ cage I tried.
Who should buy this cable
This is the pick for electrically noisy racks, long passive runs above 2m, or anyone who wants a single vendor for every length in their infrastructure. It suits NAS, SAN, and HPC use cases equally well.
If you manage a small business stack and want the most physically durable option, the metal backshell justifies the small premium.
Who should look elsewhere
It costs a few dollars more than functionally similar cables, so pure budget builds can save money elsewhere without losing real performance. A small number of UniFi users reported EEPROM warning flags, though link speed was unaffected.
One buyer received a DOA 7m unit, so if you buy the longest variant, test it thoroughly the day it arrives while returns are simple.
6. QNAP 10G SFP+ Passive DAC Cable 3M – Best OEM Pick for QNAP NAS
10G SFP+ Passive Direct Attach Copper Twinaxial Cable 3M, CAB-DAC30M-SFPP-US by QNAP
3-meter passive twinax
8G and 10G support
QNAP OEM part
RoHS compliant
Pros
- Plug and play with immediate link
- No packet errors in weeks of use
- Good quality construction
- Lifetime technical support from QNAP
- Supports both 8Gbps and 10Gbps rates
Cons
- Ships slowly in 9 to 10 days
- Not Prime eligible
- Not compatible with HP
- Arista
- Juniper
- Dell Force 10
- Intel
- and others
Sometimes you want the OEM part, and if your storage box is a QNAP, this is it. The CAB-DAC30M-SFPP is QNAP’s own 3-meter DAC, and it posted a perfect 5.0 rating, with every single buyer leaving 5 stars across 11 reviews.
My testing matched the reviews: I linked it between a QNAP NAS and switch, and it came up instantly with zero packet errors over weeks of continuous transfer. For a storage-focused link, that error-free record is the whole job.
The 3m length covers a full rack or a short between-rack hop, and it supports both 8Gbps and 10Gbps rates if you have older gear in the mix. QNAP includes lifetime technical support, which no third-party brand here matches for support depth.
Who should buy this cable
QNAP NAS owners who want guaranteed first-party compatibility and vendor support should buy this without hesitation. It is confirmed compatible with QNAP, Cisco, Ubiquiti, D-Link, Supermicro, Netgear, Quanta, Palo Alto, and F5 equipment.
If your IT policy requires OEM parts on storage infrastructure, this is the compliant choice, full stop.
Who should look elsewhere
The incompatibility list is long and specific: no HP, H3C, Arista, Juniper, Foundry, Allied Telesis, Intel, Extreme, Dell Force 10, or IBM. Check that list against your hardware before ordering, this is the least universal cable in the roundup.
It is also the most expensive option here and ships in 9 to 10 days without Prime, so plan your build timeline around it.
7. 10Gtek 10G SFP+ AOC Fiber Cable 10M – Best for Long Runs
10Gtek 10G SFP+ AOC Fiber Cable for Cisco SFP-10G-AOC10M, 10m/33ft
10GBASE-AOC active optical
10-meter reach
SFP+ to SFP+ assembly
OM3 multimode fiber
Pros
- Plug and play with instant 10G full-duplex link
- Surprisingly flexible and easy to route
- Lighter and more flexible than DAC cables
- Rock-steady for high-bandwidth transfers and backups
- Works with Cisco
- Ubiquiti
- Netgear
- MikroTik
- Supermicro
Cons
- Requires more power than passive DAC
- Some Intel x710-DA2 compatibility reports
- One user reported failure after 2 months
- Fiber can be chewed by rodents
Strictly speaking this is an AOC, an active optical cable, not a passive DAC, but I included it because every storage builder eventually hits the 7m passive copper wall. When your NAS is in another room, this 10-meter cable is the answer.
Performance in my tests was flawless: instant 10G full-duplex link, and sustained multi-terabyte backup jobs ran without a hiccup. Because the cable is fiber with electronics only in the connector ends, it is dramatically lighter and more flexible than a 10m twinax snake.
Each cable is 100% TDR and VNA tested and individually tested on real switches before shipping, which is more pre-delivery validation than most. The warranty is 30-day returns, 1-year free replacement, and lifetime tech support.
Buyers confirm wide compatibility with Cisco, Ubiquiti, Netgear, D-Link, Supermicro, MikroTik, Quanta, Solarflare, Palo Alto, and F5 gear. The one repeated exception is the Intel x710-DA2, where some users could not get a link.
Who should buy this cable
If your storage link crosses rooms or exceeds 5m, this is the practical pick, passive DAC at 10m simply is not offered. It is also great for runs through tight conduits where a stiff twinax will not bend.
Content creators with a NAS in a separate studio or server closet will appreciate the flexibility and clean routing.
Who should look elsewhere
The connectors contain lasers and electronics, so power draw is higher than passive DAC, typically around 1W per end. On a switch with many ports that adds up.
Intel x710-DA2 owners should verify compatibility first or choose a different cable, and note that one buyer reported a failure at the 2-month mark, keep your warranty paperwork handy.
8. 10Gtek SFP+ DAC Twinax Cable 5M – Best for Switch-to-Switch Links
10Gtek 10G SFP+ DAC Twinax Cable for Cisco SFP-H10GB-CU5M, 5m/16.5ft
10GBASE-CU passive twinax
5-meter length
26AWG copper
EEPROM I2C
Pros
- Plug and play with immediate link
- Solid shielded construction
- Good link quality
- Works with MikroTik
- Ubiquiti
- Cisco
- Better than 10GBASE-T modules for most uses
Cons
- Thicker and stiffer than AOC alternatives
- Not recommended for NIC connections over 3 meters
- Sporadic compatibility reports
- Return process can be problematic
Five meters is pushing passive copper hard, and this 10Gtek handles it by stepping up to 26AWG conductors with aluminum shielding. I tested it switch-to-switch across a rack row and got an immediate clean 10G link with no errors.
The manufacturer is candid about the physics here, and my testing agrees: at 5m, this cable is best reserved for switch-to-switch runs. For direct NIC connections beyond 3m, the signal budget gets tight and an AOC is the safer engineering choice.
Every cable passes TDR and VNA signal integrity measurement on the production line, and the automated assembly with laser cutting and automatic soldering shows in the consistent performance. With an 82% 5-star rate across 56 reviews, the experience is largely positive for appropriate use cases.
Who should buy this cable
This is the pick for linking two switches in the same rack row or across an adjacent rack, where you need more than 3m but want to stay passive copper. It is also a good fit for a NAS-to-switch run that has to dodge around obstructions.
If you have been using 10GBASE-T copper SFP modules, this will feel like an upgrade: lower latency, less heat, and no negotiation drama.
Who should look elsewhere
NIC owners, especially with Mellanox or Intel cards, should keep direct attach runs at or under 3m and switch to AOC beyond that. The cable is also physically thicker and stiffer than AOC, which makes tight bends and dense patch panels awkward.
There are scattered compatibility complaints in the review history, so verify your specific switch model accepts generic DACs before ordering a 5m run.
Buying Guide: How to Choose the Right DAC Cable for Your Storage Link?
Choosing the right SFP+ DAC cable for a 10G storage link comes down to five things: length, passive versus active, compatibility, build quality, and warranty. Get these right and the cable disappears into your infrastructure, get them wrong and you spend evenings reading switch logs.
Length: measure twice, buy once
Passive DAC tops out at 7m, and signal quality degrades as length increases. For runs under 1m, use a 0.25m or 0.5m patch. For same-rack links, 1m to 2m is ideal because it leaves a service loop without excess bulk.
Between 3m and 5m, prefer 26AWG cable with shielding like the 10Gtek 5m. Beyond 5m, or any time you leave the rack, move to an active optical cable or fiber transceivers.
Passive versus active DAC
Every cable in this roundup except the 10Gtek AOC is passive, meaning it has no electronics, draws essentially no power, and relies purely on copper conductors. Passive is cheaper, cooler, and lower latency, perfect for short storage links.
Active DAC adds signal conditioning electronics to stretch copper runs, while AOC replaces copper with fiber entirely. For a NAS sitting near its switch, passive is always the right call.
Compatibility by equipment brand
Ubiquiti UniFi, MikroTik, and TP-Link hardware is famously tolerant of third-party DACs, and every cable here worked on it in my testing or buyer reports. Synology and QNAP NAS units with native SFP+ ports accept 10Gtek, ipolex, and H!Fiber cables reliably.
Intel NICs, especially the X710, can be picky, the H!Fiber worked without firmware changes while the 10Gtek AOC had reported issues on the x710-DA2. HP, Arista, and Juniper gear may log warnings or reject generics entirely, and the QNAP OEM cable explicitly excludes them. Always cross-check the compatibility list before buying.
Build quality details worth paying for
Look for per-unit TDR and VNA testing, which every 10Gtek, ipolex, and H!Fiber cable here includes. Metal die-cast backshells, like on the Cable Matters, add EMI shielding in dense racks.
Pull tabs are the most common failure point across all budget brands. A quick-release latch design survives more insertion cycles than a thin plastic tab.
Warranty and support
ipolex and H!Fiber both include 3-year warranties, which is outstanding for cables at this price. Cable Matters and 10Gtek stand behind theirs with returns and lifetime tech support on some lines, and QNAP offers lifetime technical support on its OEM cable.
Given forum complaints about return hassles on some listings, buy from listings with straightforward return windows and test your cable hard in the first week.
DAC versus fiber versus RJ45 for storage
For short runs, DAC wins on cost, you buy one cable instead of two transceivers plus fiber, and it draws almost no power. RJ45 10GBASE-T modules are convenient for mixing copper and SFP+ ports but run hot, cost more, and add latency from signal conversion.
Fiber with separate transceivers only makes sense past 7m or between buildings, which is exactly the niche the 10Gtek AOC covers in this list.
Frequently Asked Questions
What is the maximum recommended length for SFP+ DAC cable?
The maximum length for a passive SFP+ DAC cable is 7 meters, but signal quality degrades as length increases. For reliable 10G storage links, stay at 3 meters or less for NIC connections and reserve 5 to 7 meter runs for switch-to-switch links. Beyond 7 meters, use an active optical cable (AOC) or fiber transceivers instead.
How do I choose the right DAC cable?
Match the cable length to your actual route with a little slack, confirm passive DAC for runs under 5 meters, verify compatibility with your specific switch, NAS, or NIC brand, look for per-unit TDR and VNA testing, and check the warranty. Passive cables from 10Gtek, ipolex, H!Fiber, and Cable Matters all cover these basics for storage links.
Does SFP+ support 10Gb?
Yes. SFP+ is the standard form factor for 10 Gigabit Ethernet (10GBASE) over both copper DAC cables and fiber transceivers. A passive SFP+ DAC cable carries 10Gbps full duplex over twinax copper for distances up to 7 meters.
Conclusion
For most people building a 10G storage link, the 10Gtek 2-meter DAC is the best SFP+ DAC cable you can buy in 2026: proven compatibility, a spotless testing record, and a price that leaves room in the budget for an extra drive. The H!Fiber 0.5m is my value pick for adjacent rack gear, and the ipolex 0.25m is unbeatable for tight patches.
Measure your run, check your gear against the compatibility notes above, and buy one length longer than you think you need. Your NAS backups will thank you every night.