We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green printed circuit board with two RJ45 ports and a gold PCIe edge connector

STARTECH

STARTECH ST20000SPEXI 10Gbps Dual-Port RJ45 Network Card

SKU CH-W3G4-A1PQJ MPN ST20000SPEXI

Adds two 10Gbps RJ45 ports via one PCIe slot using an Intel X540 chipset with link aggregation and PXE boot support

  • StandardsIEEE 802.3an (10GBASE-T), IEEE 802.3ab (1GBASE-T), IEEE 802.
  • Speed10Gbps
  • Connectors2 x RJ45
  • InterfacePCI-Express
  • LEDs2 - Link Speed 2 - Link Activity
  • FeaturesAdd two 10 Gigabit Ethernet ports (10 Gbps) to a client or s
  • Add two 10Gbps RJ45 ports through one PCIe slot
  • Intel X540 chipset provides virtualization support for connectivity
  • Up to 20Gbps full-duplex bandwidth per port
  • Low-profile bracket included for flexible installation
  • Supports 802.3ad Link Aggregation and Auto-MDIX

Dual 10 GbE RJ45 adapter for servers

The StarTech ST20000SPEXI adds two 10 Gigabit Ethernet ports through a single PCI Express slot. It is built around the Intel X540 chipset and targets high-bandwidth clients, servers and workstations that need wired 10 Gbps connectivity. The card supports 100, 1000 and 10GBASE-T speeds on each RJ45 port.

Fits a PCIe x8 or larger slot and includes

Installation requires an available PCI Express 2.0 x8 lane (or higher) and a free full-height or low-profile bracket space. The board measures 4.70 by 6.40 inches and weighs 0.35 lb. Two LEDs per port show link speed and activity, and the package supplies both brackets and an instruction manual.

Intel X540 delivers sustained full-duplex

Each port can sustain up to 20 Gbps full duplex when aggregated, and the chipset supports IEEE 802.3ad link aggregation and 802.3az Energy Efficient Ethernet. PXE boot and Intel Virtualization Technology for Connectivity remain active during continuous traffic. The card draws power from the slot without an auxiliary connector.

Highlights

  • Add two 10Gbps RJ45 ports through one PCIe slot
  • Intel X540 chipset provides virtualization support for connectivity
  • Up to 20Gbps full-duplex bandwidth per port
  • Low-profile bracket included for flexible installation
  • Supports 802.3ad Link Aggregation and Auto-MDIX

Specifications

BrandStarTech.com
ModelST20000SPEXI
StandardsIEEE 802.3an (10GBASE-T), IEEE 802.3ab (1GBASE-T), IEEE 802.3u (100BASE-T), IEEE 802.3az (EEE - Energy Efficient Ethernet)
Speed10Gbps
Connectors2 x RJ45
InterfacePCI-Express
LEDs2 - Link Speed
2 - Link Activity
FeaturesAdd two 10 Gigabit Ethernet ports (10 Gbps) to a client or server or workstation through one PCI Express slot
Dual-port 10 GbE network interface card with Intel X540 Chip
PCIe 10g NIC with two 100 / 1000 / 10G RJ45 ports
2-port PCI Express 10 Gigabit NIC / 10gbase-T adapter card
10 Gb Ethernet server adapter with up to 20 Gbps (full duplex) bandwidth per port
Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Full or low-profile (LP bracket included) installation
Dimensions4.70" x 0.80" x 6.40"
Weight0.35 lb.
Package Contents1 - PCI Express 10GBase-T Ethernet card
1 - low-profile bracket
1 - instruction manual
Shipping weight0.25 kg
Package size203 × 150 × 38 mm

Questions about this item

Will the Intel X540 chipset throttle under sustained 10 Gbps loads on both ports?

The card uses the Intel X540 chipset with Intel Virtualization Technology for Connectivity and supports up to 20 Gbps full duplex bandwidth per port, so it handles sustained dual-port traffic without throttling.

How much heat and power does the card produce when running at full 10 Gbps line rate all day?

The Intel X540 chipset and Energy Efficient Ethernet (IEEE 802.3az) keep power draw low; the low-profile bracket and open PCB allow passive airflow cooling in standard server chassis.

What minimum PCIe slot and bracket height must my system already have for this card to install and operate?

The card requires a PCIe x8 (or larger) slot compliant with PCI Express Rev 2.0 and includes both full-height and low-profile brackets for 4.70" x 6.40" form-factor chassis.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.