5-Port Gigabit Ethernet Switches
Five-Port GigE Switches in PCIe/104 and PCI/104-Express
Operating Temperature -40° to +85°C
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LAN35255 in IDAN configuration | LAN25255 in IDAN configuration |
Key Features
- PC/104 form factor
- Bus Structure Options:
- PCIe/104 (LAN35255HR)
- PCIe universal expansion bus (Type 1 or Type 2)
- PCI/104-Express (LAN25255HR)
- PCIe universal expansion bus (Type 1 or Type 2)
- PCI pass-through expansion bus
- PCIe/104 (LAN35255HR)
- PCIe x1 interface
- BroadCom BCM53115 unmanaged Gigabit Ethernet Switch
- Compliant with IEEE 802.3 and 802.3x specifications
- Four 1000/100/10 Mbps Ethernet Ports plus 1 host port
- Auto MDI Crossover
- Intel WG82574IT PCI Express Ethernet Controller for interface to host cpuModule
- Jumbo Frame Support (up to 9KB) Onboard tri-color LEDs
- Connector for external LEDs
- Requires only +5 VDC for operation
- Return to our Ethernet Switch selection guide to view other switches including PCI Express and standalone configurations.
Description
This family of 10/100/1000 Ethernet switches offers five total ports: four ports are available on-board, and one port is available to the host CPU through a x1 PCI Express Gigabit Ethernet controller. This design allows the CPU to use the switch without the need for external cables.
Connector Interface
- Universal PCI Express Stack up and down connection configuration
- PCIe universal expansion bus (Type 1 or Type 2)
- PCI pass-through expansion bus (LAN25255 only)
- RJ-45 populated for Ethernet ports (0.1” 2x5 DIL connector optional)
Software
- Drivers for DOS (included on companion CD)
- Drivers for Windows XP & Windows 7 (included on companion CD)
- Open source Linux drivers included in the kernel
- Drivers included in most modern operating systems. Check with the OS manufacturer

Physical Attributes
- Dimensions
- Length (L): 3.775 inches (95.89 mm)
- Width (W): 3.550 inches (90.17 mm)
- Stand-off Height: 0.600 inches (15.24 mm)
- Weight: Approximately 0.22 lbs. (0.10 Kg)
- Standard Operating Temperature, 90% humidity non-condensing: -40 to +85°C
- Storage Temperature: -55 to +125°C
- MTBF: 2,203,135 hours
- Input Power Requirements: +5 VDC
- Typical Power Consumption: 3.2 W with all ports linked at 1Gbps
Documentation and Downloads
Ordering Information
Part Number | Description | Value OEM |
---|---|---|
LAN35255HR | PCIe/104 Five-Port Ethernet Switch (PCIe Expansion) | $695 |
LAN25255HR | PCI/104-Express Five-Port Ethernet Switch (PCIe and PCI Expansion) | $695 |
RTD Embedded Technologies, Inc.
Designed and Made in the USA
sales@rtd.com | +1-814-234-8087