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Model: LE8127F1(X4)
Why doesn't my card reach full 10Gbps?
Full 10G works even on Gen3 boards; update the Realtek driver and test with iperf, not browser speed tests.
Which cables and modules can I use?
Any 10G/1G SFP+ DAC, AOC or optical fiber module (LC); OM3/OM4 fiber for runs beyond 3 m.
Is macOS supported?
Realtek offers no official macOS driver for RTL8127, so we do not recommend Mac systems.
Does it support Legacy BIOS PXE boot?
UEFI and Legacy BIOS PXE are listed on the A+ card; an onboard switch toggles PXE on or off.
Can I wake the PC or check link status remotely?
Built-in Wake-on-LAN supports remote power-up; LEDs show green for 10G and amber for 1G.
1Gbps Gigabit Ethernet
Aluminum Heatsink
Dual Brackets Included
2.5Gbps Multi-Gig Ethernet
Backward Compatible: 2.5G / 1G / 100M
PCIe x1, Low-Profile Bracket Included
10Gbps Single-Port RJ45
PCIe 4.0 x1
Wake-on-LAN / Jumbo Frame Support
NIC with Realtek Chip
10/25/100G NIC with Intel Chip
RDMA NIC with ConnectX Chip
NIC with Broadcom Chip
OCP 3.0 NIC
PoE+ Network Card
Model: LE8127F1(X4)
| Controller | Realtek RTL8127 |
|---|---|
| Host Bus Interface | PCIe 3.0 x2 (x4 physical slot; fits x4/x8/x16) |
| Transfer Speed | 10G / 1GbE dual-speed auto-negotiation |
| Network Standards | 10G / 1GbE over SFP+; IEEE 802.1Q VLAN, IPv4/IPv6 |
| Port | 1 x SFP+ cage (fiber module, DAC or AOC) |
| Jumbo Frame | Supported (RTL8127 standard feature) |
| Supported (built-in WOL) | Wake-on-LAN (WoL) |
| PXE Boot | UEFI & Legacy BIOS (per A+ card), onboard ON/OFF switch |
| Flow Control | IEEE 802.3x |
| Heatsink | Black finned aluminum heatsink over controller (as pictured) |
| Brackets | Standard + low-profile, both included (as pictured) |
| Power | Bus-powered, under 3W typical; no auxiliary power connector |
| LED Indicators | Green = 10G, amber = 1G; solid = link, blinking = data |
| OS Support | Windows 10/11, Linux (kernel 6.17+ tested), Ubuntu, CentOS; ESXi vendor-listed but no official driver |
| Features | UEFI Mode PXE Boot, WOL (Wake on LAN) |
| In the Box | 1 x Network card, 1 x Low-profile bracket (manual unconfirmed) |
Why doesn't my card reach full 10Gbps?
Full 10G works even on Gen3 boards; update the Realtek driver and test with iperf, not browser speed tests.
Which cables and modules can I use?
Any 10G/1G SFP+ DAC, AOC or optical fiber module (LC); OM3/OM4 fiber for runs beyond 3 m.
Is macOS supported?
Realtek offers no official macOS driver for RTL8127, so we do not recommend Mac systems.
Does it support Legacy BIOS PXE boot?
UEFI and Legacy BIOS PXE are listed on the A+ card; an onboard switch toggles PXE on or off.
Can I wake the PC or check link status remotely?
Built-in Wake-on-LAN supports remote power-up; LEDs show green for 10G and amber for 1G.
1Gbps Gigabit Ethernet
Aluminum Heatsink
Dual Brackets Included
2.5Gbps Multi-Gig Ethernet
Backward Compatible: 2.5G / 1G / 100M
PCIe x1, Low-Profile Bracket Included
10Gbps Single-Port RJ45
PCIe 4.0 x1
Wake-on-LAN / Jumbo Frame Support
NIC with Realtek Chip
10/25/100G NIC with Intel Chip
RDMA NIC with ConnectX Chip
NIC with Broadcom Chip
OCP 3.0 NIC
PoE+ Network Card
