How to Install, Replace and Repair Internal Modems of Laptops and Notebooks

Analog Modems

Apple PowerBook 1xx	Memory upgrade, hard disk upgrade, modem installation, keyboard exchange (in Japanese).
Apple PowerBook Duo 2xx	Memory upgrade, keyboard exchange, hard disk upgrade, modem installation, backup battery replacement (in Japanese).
Apple PowerBook Duo	Overclocking, cleaning the keyboard, changing the CAPS LOCK light to a red LED, adding a hard drive activity light, adding a ADB port in place of the modem, repairing the AC adapter port.
Apple PowerBook 5xx	Memory and hard disk upgrade, keyboard exchange, modem installation, CPU upgrade (in Japanese).
Apple PowerBook Duo	Schematics of the internal Express Modem card (in Japanese).
Apple PowerBook Duo	Jumper settings of the internal Express Modem card (in Japanese).
ASUS Eee PC 701 4G	The modem port is covered with a piece of black foam and not used, but the internal connection points are still there and supported in BIOS 8804. To install a modem card, two wires from the internal header have to be run down to the Mobile Daughter Card - MDC slot.
Fujitsu-Siemens LifeBook B-2154	Upgrade and repair RAM, Modem and Ethernet Socket Cover, Power Socket.
Panasonic ToughBook CF-M34	The is available with CDPD wireless data capability. This comprises an internal Sierra SB300 modem, an antenna mounted on the screen, and some intermediate cabling and connectors. The internal wireless card, is more or less a PCMCIA type-III device, but instead of a 68-pin connector on the end, there's a flat ribbon cable bringing signal to it from the motherboard. Take apart pictures and a proprosal to junk the 56k modem and put a MiniPCI wireless card in the slot.
Siemens SimPad	Disassembly and integration of a BlueTooth module. These instructions show how to replace the internal DECT modem with a bluetooth interface leaving the PCMCIA slot free for other purposes and needing far less energy than a WLAN card.

HSDPA Modems

Samsung Q1 Ultra	This blog claims to have a Sierra mini PCI Express HSDPA modem attached inside the case.
ASUS Eee PC 701	How to install an internal 3G HSDPA card inside the notebook.