ULANSeN
ULANSeN Dual PCIe 3.1 2.5GBase-T Network Adapter
Bottom line: The ULANSeN Dual PCIe 3.1 2.5GBase-T Network Adapter: Intel I226-V controller cuts power draw and packet errors vs older I225-V silicon; main trade-off: 180-day warranty is short next to the 1-3 years many NIC vendors offer.
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Pros & Cons
Pros
- ✓ Intel I226-V controller cuts power draw and packet errors vs older I225-V silicon
- ✓ Two 2.5GBase-T RJ45 ports on one x1 card, so no second slot burned
- ✓ Falls back to 1000BASE-T, 100BASE-TX and 10BASE-TE per 802.3bz/ab
- ✓ Drivers span Win10/11, Linux 5.8+, RHEL 8.x, Ubuntu 22.04, ESXi 7/8, OPNsense-class OSs
- ✓ Low-profile bracket included and seats in x1 through x16 slots
Cons
- ✗ 180-day warranty is short next to the 1-3 years many NIC vendors offer
- ✗ PCIe 3.1 x1 at 5GT/s caps aggregate throughput below two saturated 2.5G links
SpecPicks Verdict
SpecPicks scored ULANSeN Dual PCIe 3.1 2.5GBase-T Network Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. ULANSeN's retro networking cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro networking cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- PCI Express 3.1 :5GT/s Support for x1 width (Lane).The I225-V has been discontinued, and the I226-V will replace it. The two models have identical functionality. Compared to the I225, the I226 has improved error rates, offering better data packet stability over longer cable lengths and providing a more stable network connection. It also enhances the accuracy and stability of data transmission. Additionally, the I226 reduces active power consumption compared to the I225, making it more energy-efficient
- Network Interfaces:Integrated MAC + BASE-T PHY. MDI (Copper) standard IEEE 802.3 Ethernet interface for 2500BASE-T, 1000BASE-T, 100BASE-TX, and 10BASE-TE applications (802.3, 802.3u, 802.3bz, and 802.3ab)
- Compatible for X1,X2,X4,X8,X16，Comes with low profile bracket
- Support Win10/11,Linux Kernel 5.8/5.16.18,RHEL 8.1/8.3/8.6,Ubuntu* 22.04 LTS,FreeBBSD 13.0,VMware ESXi7.0/8.0,DPDK 20.05/22.07,OPENWRT/UNRAID/PVE.Support PXE function
- 180 day worry-free warranty and friendly customer service. If you have any questions, we will help you solve the problem when you need it, and if it can’t be solved, we will provide a refund and no return is required
Full Specifications
| Brand | ULANSeN |
|---|---|
| Model Number | Dual I225 |
| Compatibility | Mac, Linux |
| Built-In Media | 1 x Low profile bracket, 1 x PCIe I225-V Single-2.5G Network Card, 1 x User’s Manual |
| Number of Items | 1 |
| Number of Packs | 1 |
| Compatible Devices | Desktop |
| Data Link Protocol | Ethernet, IEEE802.3bz, IEEE802.3ab ,IEEE802.3u ,IEEE802.3,802.3x ,IEEE802.3z,IEEE802.3az |
| Data Transfer Rate | 2.5 gigabits_per_second |
| Hardware Interface | PCI Express 3.0, PCI Express x1 |
| Warranty Description | 1 Year |
| Item Dimensions L x W x H | 3.46"L x 2.6"W x 0.78"H |
| Full listing title | Dual PCIe 3.1 2.5GBase-T Network Adapter with Intel I225-V / I226-V 2500/1000/100Mbps PCI Express Gigabit Ethernet NIC Card RJ45 LAN Controller for Windows 10/11 with Low Profile Bracket |
Ready to buy?
Dual PCIe 3.1 2.5GBase-T Network Adapter with Intel I225-V / I226-V 2500/1000/100Mbps PCI Express Gigabit Ethernet NIC Card RJ45 LAN Controller for Windows 10/11 with Low Profile Bracket is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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