• HP Apollo Series 400 Model 400dl, 400t, 425t
• HP Apollo Series 400 Model 400s, 433s

It contains info that equally applies to the 345, 375, 380, 382, 385, and 425e models.

Here's some info gleaned from it (I'd be happy to scan in additional pages if you think what you need is in this manual).

400t, 425t ship with 0.6 m (2 ft) internal scsi cable length
400s, 433s ship with 1.6 m (5.5 ft) internal scsi cable length
total scsi length not to exceed 6 m (19.6 ft)

• Chapter 2: Controls, Indicators, and Connectors
  (includes info on location of buttons and connectors on 4XXs and 4XXt models):
  • page 2-3 (System Unit Controls)
  • pages 2-6 thru 2-7 (System Unit Rear Panel Connectors, 400dl, 400t, 425t)
  • pages 2-8 thru 2-8 (System Unit Rear Panel Connectors, 400s, 433s)

• Chapter 3: Booting Your Series 400 Workstation
  (includes info on chosing bootable devices and setting hardware configurations):
  • pages 3-2 thru 3-3 (Booting and Power-up Screens)
  • pages 3-4 thru 3-5 (Boot Mode Selection)
  • pages 3-6 thru 3-7 (Boot Mode Selection, continued)
  • pages 3-8 thru 3-9 (I/O Interfaces)
  • pages 3-10 thru 3-11 (Auto System Select Mode)
  • pages 3-12 thru 3-13 (Scan for System)
  • page 3-14 (Selected System)