[this file is old]
External links in bold
Laptop add-on cards cardbus/PCMCIA
these aren't just for laptops you know - cardbus adapters are available for desktop PC's too in PCI flavor(but not PCIe for some reason!).
IOGEAR GPF113 IEEE 1394 PCMCIA Card 3 x IEEE 1394 - Retail, available at newegg $30+5
D-Link DUB-C2 USB 2.0 PCMCIA Card - Retail, available at newegg $33+5
3 USB 2.0 ports
SABRENT TV-PCB01 TV Tuner PCMCIA Card with FM Radio and Remote Control - Retail, available at newegg $40+5
StarTech CB2S650 Serial Ports PCMCIA Card - Retail, available at newegg $66+5
2 Port Serial Ports, up to 921.6 Kbits/Sec
VANTEC UGT-ST350CB SATA PCMCIA Card - Retail, available from newegg $27+5
up to 4 slots all in a 1U or smaller enlosed flat box. includes a power supply - up to 55W per card. laptop versions support 1 PCI-E x1 or the pro version supports a long x16 card.
StarTech.com 2 Port eSATA Cardbus PC Card Adapter - Storage controller - 2 Channel - SATA-300 - 300 ...(more), available from antonline $35+10
up to 4 slots all in a 1U or smaller enlosed flat box. includes a power supply - up to 55W per card. laptop versions support 1 PCI-E x1 or the pro version supports a long x16 card.
cardbus/PCMCIA Networking adapters
D-Link DFE-690TXD 10/100Mbps PCMCIA Ethernet Adapter - Retail, available from newegg $26+5
cardbus type II only, not PCMCIA as advertised.
D-Link GigaExpress DGE-660TD 32-bit Gigabit Ethernet Cardbus Notebook Adapter - Retail, available from newegg $37+5
TRENDnet TE100-PCBUSR 10/100Mbps 32-Bit CardBus Fast Ethernet Card with Xpress Port - Retail, available from newegg $18+5
TRENDnet TEG-PCBUSR 32-bit Gigabit CardBus PC Card - Retail, available from newegg $23+5
54Mbps WIRELESS LAPTOP PC CARD - IEEE 802.11g COMPLIANT, available at cablestogo $50
WEP 64,128-bit security. [I guess it's lacking WPA & WPA2? not good.]
INTERLINK VP6600 - Retail, available from newegg $50+5
bluetooth remote control. has LiPo rechargeable battery.
Linksys WPC100 RangePlus Wireless Notebook Adapter, available from newegg $60
MIMO. PC[MCIA] card.
Linksys WPC200 Wireless-G Business Notebook Adapter with RangeBooster, available from newegg $80+6
2X range. PC[MCIA] card. works best with WAP200 series access points.
LINKSYS WPC4400N Wireless-N(draft) Business Notebook Adapter - Retail, available from newegg <$120
MIMO. PC Card. best for WRT4400 series routers.
LINKSYS WPC300N Wireless-N(draft)/b/g Business Notebook Adapter - Retail, available from newegg $70
MIMO. PC Card. 2.4GHz band only.
LINKSYS WPC600N Wireless-N(draft)/b/g/a Business Notebook Adapter - Retail, available from newegg <$80
MIMO. PC Card. dual band 2.4GHz and 5GHz.
Linksys WPC54GX WirelessG Notebook Adapter with SRX400 for Windows, available from nextag $30-100
MIMO. goes to 400Mbit. pretty good for G. better than n.
Linksys WPC54GS PCMCIA Wireless-G Adapter with SpeedBooster - Retail, available from newegg $60
speedbooster only gives advantage if you have a speedbooster router (WRT54GS).
ExpressCard
ExpressCard 34 to PCMCIA PC Card and CardBus Read-Writer DuelAdapter 1 Slot, available from synchrotech $101
ExpressCard to PCMCIA PC Card. Plug a PC Card into an Express Card laptop.
Linksys WEC600N Dual-Band Wireless-n(draft)/b/g/a Express-Card adapter, available from newegg <$80
MIMO. 2,4 & 5GHz bands simultaneously.
Startech.com CB2EC Cardbus/PCMCIA/PC Card To Expresscard Adapter, available from antonline.com $69