/sys$common/syshlp/USB$SDA

 SDA> USB SHOW OHCI ENDPOINT 1
 ED[01]
 ED Flink            896028f0
 ED Blink            896028f0
 ED headED           89720040
 ED physical address 8972007c
 ED bandwidth        00000000
 ED next             00000000
 ED flags            00000000