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3.2. What hardware upgrades exist for the Lisa?

Apple products

• Dual Parallel Port Expansion Card
• 512KB Memory Card (most Lisas have both slots filled as only MacWorks XL would work with 512K)
• 5 MB ProFile Hard Disk
• 10 MB ProFile Hard Disk
• Square-pixel screen modification kit (for use with MacWorks XL, MacWorks Plus, and MacWorks Plus II)
• 1.8 Amp "DataPower" Power Supply (Standard in Lisa 2/10, recommended for all Lisa computers)
• For a brief time, Apple offered an exchange program; for trading in a Lisa 2/5 or 2/10, you received a Macintosh Plus and HD20.

Third Party Products

AST

• RamStak memory board (configurable as 512K, 1M, 1.5M, or 2M)

Tecmar

• Four Port Serial Card (for use with Xenix only)

Sun Remarketing

• Double Sided 3.5" 800K Floppy Drive
• SCSI card (for use with MacWorks Plus and MacWorks Plus II)
• SIMM Memory Card (512K, 1M, 1.5M or 2M total)
• Sun20, 30, 40 Hard Drive (20-40MB Parallel Port hard drive installed internally above the floppy drive)

Neville and Steel

• LisaDAC Sound Card (rare) - provides sound capability similar to Mac Plus

Query Engineering Inc.

• Name changed to Sigma Seven Systems Ltd. in 1993 - see below

Sigma Seven Systems Ltd.

• XLerator - 16 MHz 68000 with 4 SIMM sockets, optional SCSI port, optional MC68881/2 FPU for use with MacWorks XL, MacWorks Plus, and MacWorks Plus II
• optional modification for the above supports 4MB SIMMs
• X/Lisa SCSI Accessory Card - provides 50 pin SCSI connector for XLerator SCSI port, and facility to boot SCSI drive from the "Startup From" menu
• XLerator 12.5 - 12.5 MHz 68000 with 2 SIMM sockets
• XLerator 18 - 18 MHz 68000 with 2 SIMM sockets
• QuickBoot - Upgrade ROM for Sun Remarketing SCSI card to boot off SCSI drive from the "Startup From" menu
• Programmable Frequency Generator (PFG) - part of MacWorks Plus II

Public Domain

• LRamBo - Modification to Apple 512K Memory Board to provide 2 MB
• 4MB Mod - Modification to CPU board and Memory Boards to provide 4 MB (MacWorks variants only) http://www.freeinfosociety.com/electronics/schemview.php?id=1421

Unknown manufacturer

• ROM switcher - provides dual ROM sockets to allow switching between version H and 3A ROMs with the flip of a switch

Unconfirmed Products

Priam/Tecmar

• Priam interface card and DataTower (containing 86 MB Hard Drive and 60 MB 1/4" Tape Drive, for use with LOS and Xenix)
• The DataTower is reported to be 7" wide X 26" tall X 20" deep, weighing 80 pounds.
• Mentioned in Semaphore Signal and shown on some price lists of the time, but there is no confirmation that these achieved production status

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