Dukane LEADERBOARD LB77H - Manual (Page 19)

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The projector should have the following three properties:
1) Front projector
2) Support resolution of the PC
3) The luminous output should be more than 500 lumens.
9. Hookup when the serial port is occupied.
Both table model and notebook PCs allow added serial ports:
z Install a serial port card on PC (note: generally, PCMCIA serial port card for notebook PC)
z Using"USB2.0 to RS232C plus the special cable.
10. Can 25-pin serial port replace 9-pin serial port?
Yes, but only with an adapter from 25 to 9 pins on the PC.
11. What to do if a permanent marker (un-erasable pen) is used on the whiteboard.
Take a dry erase color pen and write over the permanent ink. Then wipe off the board. The dry erase ink
acts as a release agent for the permanent ink.
Test a small area to be sure this works.
Clean inked area lightly using absorbent cotton dipped with alcohol.
12. How to clean the panel of IPBOARD?
Clean the board lightly using a piece of clean water damping cloth.
Attention: wring out the cloth so there is no flowing water. Water must not enter the sides of the board.
If this happens let the board dry before use.