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Syba Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN Adapter Low Profile Bracket SD-PEX24066
IO CREST

Syba Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN Adapter Low Profile Bracket SD-PEX24066

Bottom line: The Syba Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN: Two 2.5GbE RJ45 ports on a single PCIe card; main trade-off: PCIe only — will not work in legacy PCI slots.

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Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Two 2.5GbE RJ45 ports on a single PCIe card
  • ✓ Fits any PCIe slot from x1 up to x16
  • ✓ Includes 8cm low-profile bracket for HTPC/SFF cases
  • ✓ Supports 802.1Q VLAN tagging
  • ✓ Backed by Syba 3-year warranty

Cons

  • ✗ PCIe only — will not work in legacy PCI slots
  • ✗ Older Windows builds need the bundled driver disk
  • ✗ Caps at 2.5 Gbps per port, no 10GbE
  • ✗ Both ports share a single PCIe x1 bandwidth ceiling

Manufacturer description

Provides two 2. 5 Gigabit Ethernet connectivity to Mac Pro towers and Windows PCs. Simple way to add or expand 2. 5 Gigabit Ethernet connectivity to any compatible computer. It is suitable for multiple market segments and emerging applications, such as desktop, mobile, workstation, server, communications platforms, and embedded applications.

SpecPicks Verdict

SpecPicks scored Syba Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN… using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. IO CREST'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

  • With this PCIe Card, you can add a 10/100/1000/25000 Mbps Ethernet port to any PC through a PCIe slot. Fits any PCI Express x1, x2, x4, x8 or x16 socket; additional 8cm low-profile bracket provides the option for installation in small size HTPC case.
  • This pci-based 10/100/1000/25000 Dual 2. 5 Gigabit Ethernet network adapter card provides a simple connection to two 2. 5 Gigabit Ethernet network, and is fully compatible with 802. 1Q virtual LAN (VLAN) tag. And Ethernet card which Is compliant to IEEE802. 3, IEEE802. 3U & IEEE802. 3ab.
  • The high quality PCIe Dual 2. 5 Gigabit NIC with 12cm profile bracket and additional 8cm profile bracket that makes it easy to install the card in a small form Factor/Low profile computer case/server.
  • 2. 5 Gigabit network card Compatible with a broad range of operating systems, including Windows 10, 8/8. 1, 98SE, ME, 2000, XP, XP-64bit, Vista, Vista-64bit, 7, 7-64bit, Linux, 10. 7
  • What you get: IO crest 2. 5 Gigabit PCI-E network card x1, driver Disk x1, 8cm low-profile bracket x1. Backed by Syba 3 year hassle-free and lifetime customer service. Important Note: only work with PCI-E slot, not for PCI slot.

Full Specifications

BrandIO CREST
Color2.5G
Model NumberSD-PEX24066
CompatibilityPC, Linux
Built-In MediaManual, CD Driver
Item Type NameDual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN Adapter Low Profile Bracket SD-PEX24066
Mfr Part NumberSD-PEX24066
Compatible DevicesDesktop
Data Link ProtocolIEEE 802.3
Data Transfer Rate2.5 gigabits_per_second
Hardware InterfacePCI, PCI Express x1
Warranty Description3 Year Warranty
Item Dimensions L x W x H4.2"L x 0.5"W x 5.5"H
Global Trade Identification Number00810154018697

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Syba Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN Adapter Low Profile Bracket SD-PEX24066 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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