Z3815A, top edge and front view (10811A for scale):
Rear view showing I/O, power, and antenna connectors (10811A for scale):
Font panel:
Bottom view:
Top view (cover removed):
Close-up view of E1938A oscillator:
Side view of thin oscillator mezzanine board above motherboard:
HP Z3815A GPS receiver (with 10811A for scale):