Bio-Rad Model 680 Microplate Reader Accessories - Manual (Page 8)

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2.2 External Features
1. Release latch for rear cover 4. Rear cover
2. Liquid crystal display (LCD) 5. Printer slot (when optional built-in printer is installed)
3. Membrane keypad 6. Reading chamber door
7. RS-232C serial interface 11. Printer port (only when optional built-in printer is not installed)
8. Serial number Label 12. Power cord receptacle
9. Fuse 13. Cooling Fan
10. Power switch 14. Cooling Vents
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