Lekuo PCIe 10G SFP+ Network Card | Realtek RTL8127 | Ultra-Low 1.79W, Fanless

Brand

Lekuo

Model

PR27F11

Product Name

PCIe X4 Single-port 10G SFP+ Fiber Network Adapter

Chipset

Realtek RTL8127

Host Interface

PCIe 3.0 x2 (electrically), compatible with PCIe x4 / x8 / x16 slots

Network Interface

1 × SFP+

Data Rate

10 Gbps / 1 Gbps

Power Consumption

1.79W @ 10G / 0.29W @ 1G (typical)

Supported Standards

IEEE 802.3 / 802.3z / 802.3ae / 802.1Q VLAN / 802.1ad Q-in-Q

Jumbo Frames

Up to 16 KB

Operating Temp

0°C to +70°C

Storage Temp

-55°C to +125°C

Dimensions

80 mm × 45 mm

Weight

Net: 41.2 g / Gross: 112.4 g

Package Included

1 x PCIe 10G SFP+ Network Card, 1 x Low Profile Bracket, 1 x User Manual

PCIe 10G SFP+ — Industry-Leading 1.79W, Fully Fanless

The Lekuo PR27F11 delivers true 10 Gigabit fiber connectivity via a standard SFP+ port, powered by the Realtek RTL8127 chipset. At just 1.79W during 10G operation — 75% less than Intel X520/X710 — it runs completely fanless, making it ideal for NAS, home labs, and noise-sensitive server environments.

Power Comparison

Card	Power @ 10G	vs PR27F11
Lekuo PR27F11	1.79W	—
Marvell AQC113	~3.5W	+96%
Intel X520	~7W	+291%
Intel X710	~9W	+403%

Fiber Reach — Beyond Copper

Module Type	Max Distance	Fiber
10GBASE-SR	300 m	OM3/OM4 multimode
10GBASE-LR	10 km	OS2 single-mode
10GBASE-ER	40 km	OS2 single-mode
DAC Twinax	1–7 m	Direct attach copper

Key Features

PCIe 3.0 x2 electrically — compatible with x4 / x8 / x16 slots
Jumbo Frames up to 16 KB for optimized NAS & large file transfers
IEEE 802.1Q VLAN & 802.1ad Q-in-Q tagging for multi-tenant networks
Hardware checksum & segmentation offload — reduces CPU load 40–60%
Wake-on-LAN, PXE / EFI network boot
Full-duplex IEEE 802.3x flow control
Operating temp: 0°C to +70°C | Passive cooling, no fan required

Works With

OS: Windows 10/11 · Linux kernel 2.4+ (native in-kernel driver)
Virtualization: TrueNAS Core/SCALE · Proxmox VE 7+ · VMware ESXi (community VIB) · UnRAID
Use Cases: NAS 10G uplink · 4K/8K video editing · HFT & HPC · data center rack cabling · inter-building fiber links

Package Contents

1 × PR27F11 PCIe 10G SFP+ Network Card
1 × Low-Profile 2U Bracket
1 × User Manual

Related Downloads

Driver Download