Motherboard
Model: MSI H81M-P33 (Micro-ATX)
Chipset: Intel H81 Express Chipset
Socket: LGA 1150 (supports Intel 4th gen Haswell & 5th gen Broadwell CPUs)
Form Factor: Micro-ATX (24.4cm x 18.0cm)
BIOS: MSI Click BIOS 4, UEFI
Expansion Slots:
1 × PCI Express 2.0 x16 (blue slot, for GPU)
2 × PCI Express 2.0 x1
CPU
Installed CPU: Intel Core i7-4790
4 cores / 8 threads
Base Clock: 3.6 GHz, Turbo Boost up to 4.0 GHz
8 MB Intel Smart Cache
Integrated Graphics: Intel HD 4600
TDP: 84W
Memory
Slots: 2 × DDR3 DIMM (dual-channel)
Capacity Supported: Up to 16 GB total
Your setup: 2 × 8 GB DDR3 = 16 GB (maxed out)
Storage
2 × SATA III (6 Gb/s) ports
2 × SATA II (3 Gb/s) ports
Supports RAID 0, 1, 5, 10
Graphics / Display
Outputs on back panel:
1 × VGA (D-Sub)
1 × DVI-D
Supports Intel integrated graphics (from CPU)
PCIe x16 slot allows for discrete graphics card installation
Audio & LAN
Audio: Realtek ALC887 (7.1-Channel HD Audio)
LAN: Realtek 8111G Gigabit LAN
Back I/O Ports (the backplate you mentioned)
1 × PS/2 Keyboard/Mouse combo port
1 × VGA
1 × DVI-D
4 × USB 2.0
2 × USB 3.0
1 × RJ45 LAN port
3 × Audio jacks (Line-In / Line-Out / Mic-In)
Internal Headers
1 × USB 3.0 header (front panel)
2 × USB 2.0 headers (front panel)
1 × Front panel audio header
1 × System fan header + 1 × CPU fan header
Your Current Build
Motherboard: MSI H81M-P33
CPU: Intel Core i7-4790
RAM: 16 GB DDR3 2×8 GB
1GB Graphic Card included
Backplate included