Document: Support for custom PCMCIA/CF cards Copyright (c) 2007, Voipac Technologies a.s. If your PCMCIA or CF card is not recognised by kernel it is possible to add new card ID for some drivers. If you use PRISM WLAN cards and HOSTAP driver add your card ID to linux/drivers/net/wireless/hostap/hostap_cs.c and search for structure "hostap_cs_ids". Here are examples of some custom WLAN card ID PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0002), PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0004), PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0007), To add support for CF memory card edit linux/drivers/ide/legacy/ide-cs.c and search for structure "ide_ids" Here are examples of some custom CF card ID PCMCIA_DEVICE_MANF_CARD(0x000a, 0x0000), PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401), PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0200),