The Micro House Technical Library (MTL) is arranged into four major categories:

Main Boards:
Diagrams and documentation covering almost 4,000 different main boards with jumper settings, memory configurations, cache configurations, miscellaneous jumper configurations, connection, and component locations.

Hard Drives and Hard Drive Controllers:
Diagrams and documentation for hundreds of hard drives and controller cards covering jumper settings, performance specifications, and component locations.  Also included are complete parameters (CMOS) and specifications on over 3,000 hard drives including capacity (formatted megabytes), physical (and logical where appropriate) number of heads, cylinders, sectors per track, seek times, form factor (size), height, interface type, encoding, landing zone (parking cylinder), write precompensation cylinder, reduced write current cylinder, and MTBF.  The printed version is a two volume three ring bound set that is updated quarterly.

Network Interface Cards:
Diagrams and documentation covering over 1,000 network interface cards with jumper settings and specifications. 

I/O Cards:
Diagrams and documentation covering over 1,000 I/O adapters such as video, serial, parallel, sound, and modem cards.