Better interpretation: Many PCI databases show = "Parallel port (IEEE1284) + 16550-compatible serial ports" combined into one class code, treated as a “Multi-I/O controller”.
Actually, re-checking: The full 24-bit class code is 0x070005 . In PCI specs: pci\ven_1c00&dev_3253&cc_070005
| Vendor | Details | |--------|---------| | (or Silan Integrated Circuit Co., Ltd.) | A Chinese semiconductor company. However, this specific vendor ID is also widely reused by PLX Technology (now part of Broadcom) for bridge devices, and by various third-party PCIe-to-serial/parallel bridge chips under the MCS (MosChip Semiconductor) or Oxford Semiconductor families. | Better interpretation: Many PCI databases show = "Parallel
The device identified by pci\ven_1c00&dev_3253 is a relic of the transition period between dial-up and broadband. While functionally obsolete for general internet usage, it remains a point of interest for legacy hardware enthusiasts or maintenance of older industrial equipment. Proper operation requires the specific Motorola SM56 driver suite, usually sourced from legacy driver archives. However, this specific vendor ID is also widely
| Property | Value | |----------|-------| | | ASIX Electronics (formerly MosChip) | | Chip | MCS3253 or AX99100-compatible | | Device type | PCIe to 2xRS-232 + 1xParallel port | | Class code | 0x070005 (Multi-I/O comm controller) | | Windows driver | ASIX AX99100 driver / ser2par.sys | | Linux driver | 8250_pci + parport_pc | | Common use | Industrial PCs, legacy printer/serial device connectivity |