Brand Hewlett- Packard
Product series ProDesk 400 G1 Desktop PC
Related document  HP ProDesk 400 G1 Quickspecs
Processor 
Processor Intel® 4th generation Core processors
Chipset Intel® H81 Express chipset
Chipset technology features 

Intel® ME Firmware Version 9.0
Intel® Smart Connect Technology
Anti-Theft Technology
 Graphics  
Integrated on processor Intel HD Graphics
Discrete Graphics supported 

AMD Radeon HD 8350 (1GB)
AMD Radeon HD 8490 (1GB)
AMD Radeon™ HD 8470 (2GB)
NVIDIA NVS 310 (512 MB)
NVIDIA NVS 315 (1GB)
NVIDIA GeForce GT630 (2 GB)
 Storage 
Hard drive type supported   SATA, Solid State Drives (SSD),  Self-encrypting Solid State Drives (SED)
Internal drive bays 

(1) 2.5” internal storage drive bay
(1) 3.5” internal storage drive bay
External drive bay 

3.5” drive bay; used for installing a Media Card Reader
Optical Disc Drive bay (1) Slim ODD
Media card reader bay (1) 15-in-1 USB2/3 Media Card Reader
Memory 
# of Slots 2 DIMM
Memory type supported DDR3