LAN9420/LAN9420i
PCI ID 1055:e420 · Microchip Technology / SMSC
| Vendor | Microchip Technology / SMSC |
|---|---|
| Vendor ID | 1055 |
| Device ID | e420 |
| Windows hardware ID | PCI\VEN_1055&DEV_E420 |
| Linux modalias | pci:v00001055d0000E420 |
| Linux driver | smsc9420 |
Frequently asked questions
Which device has PCI ID 1055:e420?
PCI ID 1055:e420 is “LAN9420/LAN9420i” made by Microchip Technology / SMSC (vendor ID 1055, device ID e420).
Which Linux driver supports LAN9420/LAN9420i?
In Linux kernel 6.12 the device is bound to the driver smsc9420 (source under drivers/net/ethernet/smsc). The driver is normally loaded automatically when the device is detected.
How do I check whether LAN9420/LAN9420i is in my computer?
On Linux, lspci -nn | grep -i 1055:e420 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as PCI\VEN_1055&DEV_E420.
How do I see which driver is currently in use?
lspci -nnk -d 1055:e420 lists the device with a “Kernel driver in use” line showing the active driver.