The following figure shows the front of the System x3550 M5 server with four 3.5-inch drive bays.
Figure 7. Front view of the System x3550 M5: 4x 3.5-inch drive bays
The following figure shows the rear of the System x3550 M5 server with three PCIe low profile slots.
Figure 8. Rear view of the System x3550 M5
Lenovo System x3550 M5 (Machine Type 8869)
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