HP 8100 - Elite Convertible Minitower PC Technical Reference Manual page 19

Table 2-1 shows the differences in features between the different PC series based on form factor:
Processor types supported
Processor wattage (max)
Memory:
# & type of sockets
Maximum memory
Serial ports
Parallel ports
Drive bays:
Externally accessible
Internal
Drive types supported
PCIe slots:
x16 (graphics)
x4 (x16 connector)
x1 connector
PCI 2.3 32-bit 5-V slot, 25-watt maximum
Power Supply Unit:
Module type
power rating
NOTES:
[1] 2nd serial port requires optional cable/bracket assembly.
[2] Low-profile, 25 W maximum.
[3] Low profile, 10-watt maximum
[4] Full-length;
75-watt maximum if PCIe x4 slot is not populated,
35-watt maximum if PCIe x4 slot is populated
[5] 35-watt maximum
[6] Half-height, half-length, 10-watt maximum
[7] 3.5" devices supported with adapters
[8] 2.5" solid state drives supprted with adapter brackets
[9] Can hold a 2nd hard drive
Technical Reference Guide
Table 2-1
Feature Differences by Form Factor
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SFF
Intel Core i5
95 W
4 DDR3 UDIMMs
16 GB
1 std., 1 opt. [1]
optional
1 - 5.25", 1 - 3.5" [9]
1 - 3.5"
2 HDDs,
1ODD,
RAID1
(all low profile)
1 [2]
1 [2]
1 [3]
1
internal
240-watt
System Overview
CMT
Intel Core i5
95 W
4 DDR3 UDIMMs
16 GB
1 std., 1 opt. [1]
optional
3 - 5.25" [7]
3 - 5.25" [8]
2 HDDs,
2 ODDs,
RAID1
(all full height)
1 [4]
1 [5]
1 [6]
3 full-height
internal
320-watt
2-3