Product:	MicroMac LC550 Logic Board Trade-up
Available for:	Color Classic, Color Classic II LC520 MacTV Performa 250, Performa 275, Performa 520
Upgrade to 33MHz 68030 Performance Install up to 36MB of real Memory

The MicroMac 68030 LC550 Logic Board Trade-up replaces the slower logic board in the following computers with a fast 68030-based logic board with significant memory capabilities: - Color Classic I or II - LC520 - Mac TV - Performa 250, 275 and 520 Now you have the speed and the memory to run the newer multimedia software without sacrificing the current investment you've made in your computer system.

MicroMac 68030 LC550 Logic Board Trade-up Benefits: Allows installation of up to 36MB of memory not possible on the Color Classic or Mac TV 33MHz 68030-based LC550 Logic Board Trade-up increases performance up to 220% 512KB base VRAM expandable to 768KB to run thousands of colors on built-in monitor PDS expansion slot for Ethernet or third party PDS cards Stereo sound output Productivity Solution: The MicroMac LC550 Logic Board Trade-up is MicroMac's solution to upgrading slower 68030-based Mac with integrated display, such as the Color Classic series and Mac TV Macs with a faster logic board with extended memory capabilities. The LC550 logic board can easily be expanded to 36MB. The upgrade provides such features as: 33MHz 68030 processor with or without FPU 32-bit wide data bus Base RAM of 4MB expandable to configurations of 5, 6, 8, 12, 20 or 36MB. VRAM configurations of 512KB (8-bit, 256 colors) or 768KB (16-bit, thousands of colors) PMMU (Paged Memory Management Unit) built into 68030 (PMMU is required to run Virtual Memory ) 114-pin LC style PDS slot for third party PDS cards (compatible with 96-pin LC-style PDS cards) Built-in ports for printer, modem, SCSI, ADB, audio-out (stereo) and audio-in RAM! RAM!! RAM!!! And More RAM: No longer are you limited to the 10MB limitation set by the Color Classic or the 8MB set by Mac TV. Give your applications room to breathe by adding up to 36MB of RAM onto the logic board. That's more than enough memory to run all your favorite applications, Internet software and utilities in a comfortable computing environment.

RAM considerations when upgrading from slower logic boards
	when upgrading from
	Color Classic	Mac TV	LC520 ColorClassic II Performa 275
Base RAM (soldered onto logic board)	4MB	4MB	4MB
RAM SIMM sockets	two 30-pin sockets	one 72-pin socket	one 72-pin socket
Maximum RAM	10MB	8MB	36MB
type of SIMM	30-pin SIMM	72-pin SIMM	72-pin SIMM
	the new 68030 LC550 Logic Board has 4MB base memory and has one 72-pin SIMM socket.
RAM Considerations	purchase 72-pin SIMMs or use the $19.00 MicroMac SIMMchanger Memory Upgrade product	transfer DRAM SIMM or expand with new DRAM SIMM	transfer DRAM SIMM or expand with new DRAM SIMM

No More Grainy Dithered Color Images: The MicroMac LC550 Logic Board Trade-up provides you with the ability to run 16-bit color (thousands of colors) on the built-in monitor. You can view rich, pure photographic color images in such applications as Photoshop and Web browsers displaying JPEG images. With 16-bit color you can perform accurate color correction on photographs, scans and images which is impossible to do with limited 8-bit color.

VRAM considerations when upgrading from slower logic boards
	when upgrading from
	Color Classic ColorClassic II Performa 275	Mac TV	LC520
Base VRAM (soldered onto logic board)	256KB	512KB	512KB
Minimum VRAM	256KB	512KB	512KB
corresponds to	256 colors	256 colors	256 colors
VRAM SIMM sockets	1 VRAM socket for 256KB VRAM	none	1 VRAM socket for 256KB VRAM
Maximum VRAM	512KB	512KB	768KB
corresponds to	Thousands of colors	256 colors	Thousands of colors
	The new LC550 Logic Board has 512KB base VRAM and has one 256KB VRAM socket. The base VRAM supports 256 colors, the expanded VRAM supports Thousands of Colors
VRAM Considerations	transfer VRAM SIMM or expand with new VRAM SIMM	expand with new VRAM SIMM	transfer VRAM SIMM or expand with new VRAM SIMM

The video circuitry of the LC550 Logic Board has 512KB base VRAM and can be expanded with one 256KB VRAM SIMM. MicroMac can provide a 256KB VRAM to display 16-bit color, or if your slower logic board already has expanded VRAM, you can transfer the VRAM SIMM to the new faster logic board.

Technical Hint: You can identify the amount of VRAM of your current 68030-based Mac by the following procedure: Open the Monitors Control Panel Check the possible (selectable) color depth choices. If the maximum color depth is 256 colors, you do not have a VRAM SIMM installed in your slower logic board. If the maximum color depth is Thousands of colors, you do have a 256KB VRAM SIMM installed in your 68030-based Macintosh.

Upgrade Installation: Prior to installing the MicroMac LC 550 Logic Board Trade-up you will need to update or reinstall the System software so that it is compatible with LC 550 upgrade. Once you have the correct System software installed, the installation involves removing the current slower 68030 logic board from your computer and installing the faster LC 550 logic board. Tool Requirements: A Phillips screw driver and optionally an antistatic grounding strap (available at most computer hardware stores). System Software Requirements: Minimum System Software required is System 7.1 with Enabler 403 vers1.0.2 or Mac OS 7.5x, 7.6x. Time Requirement: About one hour. 45 minutes is required for System Software installation. 15 minutes is required for the hardware exchange of the logic board. MicroMac Delivers: MicroMac 68030 LC 550 Logic Board Trade-up with documentation and Utility disks. Additional Information: For additional information please read the MicroMac 68030 LC550 Logic Board Trade-up Q&A Data Sheet.

Product	MicroMac #	Performs at	Price
MicroMac 68030 LC575 Logic Board Trade-up Models Available:
33MHz 68030 Trade-up without FPU	LB-LC550-33		$199*
33MHz 68030 Trade-up with FPU	LB-LC550-33F		$229*
* Price includes trade-in of your current Color Classic I or II, Mac TV, LC 520, Performa 250 or 275 logic board
VRAM & SIMMs
256K VRAM SIMM	VRAM256K-80		$22
16MB 72-PIN SIMM	MEM16M-72pin-80		$59
32MB 72-PIN SIMM	MEM32M-72pin-80		$99

- Available Files to Download for MicroMac 68030 LC550 Logic Board Trade-up -
MicroMac 68030 LC550 Logic Board Trade-up Software: N/A Note:
Utilities Software: Speedometer 4.0

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