Pci\ven_1c00&dev_3253&cc_070005 < PREMIUM >
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”.
The ID 1C00 is sometimes attributed to or listed as "Reserved / Vendor-defined" in older PCI databases, but actual hardware with this ID overwhelmingly points to PCIe to multi-I/O controllers from MosChip (now Asix Electronics) or Netmos designs. pci\ven_1c00&dev_3253&cc_070005
If you are troubleshooting a specific device with this ID: Better interpretation: Many PCI databases show = "Parallel
This device is a common consumer chip; it's targeted at industrial automation, POS systems, embedded PCs, and expansion cards for legacy printer/serial device support. After checking up-to-date PCI ID repositories: | Byte
After checking up-to-date PCI ID repositories:
| Byte | Value | Meaning | |------|-------|---------| | Base Class | 0x07 | | | Sub-Class | 0x00 | Serial Port (UART) | | Programming Interface | 0x05 | 16950 compatible (or higher) – indicates high-speed UART with 16650/16950 FIFO support, typically 128-byte FIFOs |





