Yamaha CRW2100S - CRW - CD-RW Drive Owner's Manual page 22

Setup Procedures
Termination ON (Default)
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Set to "ON" if CRW2100S drive
is last device on SCSI chain
4 Block Size
The data block size of the CRW2100S drive can be set to 512 bytes per sector by
setting the Block Size jumper switch to "ON." This is necessary when installing
the CRW2100S drive on a UNIX-based workstation. It is not necessary for
Windows 95/98/98 Second Edition/NT4.0/2000 computers.
Block size OFF (Default)
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n By factory default, the Block Size jumper switch is set to "OFF" and should normally be
left in this state.
13
ID SELECT
PARITY
TERMINATOR
BLOCK SIZE
ID SELECT
PARITY
TERMINATOR
BLOCK SIZE
Termination OFF
ID SELECT
PARITY
TERMINATOR
BLOCK SIZE
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Block size ON
ID SELECT
PARITY
TERMINATOR
BLOCK SIZE
1 2 4
Set to "ON" when installing
CRW2100S drive on UNIX
workstation