ADLINK cPCI-3970 Series - Manual (Page 92)

78 Getting Started
2. Remove the DB-3UMC daughter board from the blade
assembly by unscrewing the four screws securing it to
the layer-2 daughter board as shown below.
3. There is a 3.3V key on board by default, if the PMC/XMC
card you wish to install is 5V signaling, please remove
the key and set the PMC V(I/O) jumper JPX2 to the 5V
setting (see “PMC V(I/O) Select Jumper on DB-3UMC
(JPX2)” on page 66).
3.3V Key