6381-DX or DX2 System Board
J1 Keyboard Connector
J2 Mouse Port
J3 Serial Port (Comm B)
J4 Serial Port (Comm A)
J5 Parallel Port
J6 Video Port
J7 Hard Disk Connector
J8 Power Supply Connector
Power Connector/Voltage
J9 Diskette Connector
J10 Flash Memory
J11 Mouse Disable
J12 Riser Card Connector
J13 Video Feature Connector
VESA Connector
J14 Video Interrupt Enable
J15 Write Protect
J16 Video Enable
J17 Video Enable
J18 Hard Disk and Power-On LED
J19 Cache (Rear=0/128KB Front=256KB)
J20 Memory-Module Socket MEM-1
J21 Memory-Module Socket MEM-2
J22 Memory-Module Socket MEM-3
J23 Memory-Module Socket MEM-4
J24 Speaker Enable
J25 Speaker Connector
J26 Cache (Rear=0/128KB Front=256KB)
J27 Cache (Rear=0/128KB Front=256KB)
U42 Video Memory Connector
U43 Video Memory Connector
U44 Video Memory Connector
U45 Video Memory Connector
U55 486DX/DX2 (and Upgrade)
Processor Socket
U60 External Cache Connector
U61 External Cache Connector
U62 External Cache Connector
U63 External Cache Connector
U64 External Cache Connector
U65 External Cache Connector
U66 External Cache Connector
U67 External Cache Connector
U71 Ext. Cache Enable Connector
U72 Ext. Cache Enable Connector
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.