HP ProLiant DL380 Gen9 Parts — Every Component with HP Part Numbers
Published April 7, 2026 · 14 min read · By Pro Disk Network Team
Complete HP DL380 Gen9 parts guide — system boards, PSUs, Smart Array P440, riser cards, rail kits, fans, and SFF drive caddies with HP spare part numbers.
Topics: HP, ProLiant, DL380, Gen9, Server Parts, Smart Array
HP ProLiant DL380 Gen9 — The Most Deployed Server in History
The HP ProLiant DL380 Gen9 is arguably the single most popular rack server ever made. Launched in 2014, the DL380 Gen9 became the backbone of enterprise data centers, cloud providers, and MSPs worldwide. In 2026, it remains massively popular on the refurbished market — reliable, well-supported, and incredibly well-priced.
Pro Disk Network stocks 231 HP DL380 Gen9 parts.
DL380 Gen9 Specifications
| Spec | Details |
|---|
| Generation | Gen9 (2014-2017) |
| Form Factor | 2U Rack Mount |
| CPU | Dual Intel Xeon E5-2600 v3/v4 (LGA2011-3) |
| Max RAM | 1.5TB (24x 64GB DDR4 LRDIMM) |
| Drive Bays | 8x SFF, 16x SFF, or 24x SFF + 2x rear SFF |
| RAID | Smart Array P440ar, P840, H240ar |
| Network | HP 331i 4-port 1GbE (embedded) |
| Power | Dual 500W, 800W, or 1400W Flex Slot |
| iLO | iLO 4 Advanced |
Key Components
System Boards (Motherboards)
| HP Part # | Description | Price |
|---|
| 729842-002 | DL380 Gen9 System Board | $100-180 |
| 843307-001 | DL380 Gen9 System Board (v2) | $110-190 |
Power Supplies (Flex Slot)
| HP Part # | Wattage | Price |
|---|
| 720478-B21 / 723594-001 | 500W | $22 |
| 720479-B21 / 754381-001 | 800W | $35 |
| 733427-001 | 1400W | $75 |
RAID Controllers (Smart Array)
| Model | HP Part # | Cache | Price |
|---|
| P440ar | 726821-B21 | 2GB FBWC | $48 |
| P440 | 749796-001 | 4GB FBWC | $42 |
| P840 | 761872-B21 | 4GB FBWC | $80-120 |
| H240ar | 726757-B21 | None (HBA) | $25-40 |
Riser Cards
| HP Part # | Position | Slots | Price |
|---|
| 729804-001 | Primary (Riser 1) | 3x PCIe | $25 |
| 764642-B21 | Secondary LP (Riser 2) | 1x PCIe x16 LP | $20 |
Rail Kits
| HP Part # | Type | Price |
|---|
| 733660-B21 | 2U SFF Easy Install Rail Kit | $42 |
| 720863-B21 | 2U Ball Bearing Rail Kit | $40-55 |
Other Parts
- Fans: 777286-001 hot-swap fan module — $12-20
- Heatsinks: 777290-001 high-performance heatsink — $15-30
- Drive Caddies: 651687-001 2.5" SFF SC caddy — $5-10
- Bezels: DL380 Gen9 front bezel with key — $15-30
- Cache Batteries: 727258-B21 FBWC capacitor pack — $15-25
DL380 Gen9 vs DL380 Gen10
| Feature | Gen9 | Gen10 |
|---|
| CPU | E5-2600 v3/v4 (max 22 cores) | Scalable Xeon (max 28 cores) |
| RAM | DDR4-2400 (1.5TB max) | DDR4-2666 (3TB max) |
| NVMe | Limited (2-3 bays) | Full NVMe support |
| Price (refurb) | $200-500 | $500-1500 |
| Parts cost | 50% cheaper | Premium pricing |
Verdict: Gen9 is the value king. Gen10 is only worth the premium if you need more than 22 cores per socket or full NVMe support.
Browse all HP DL380 Gen9 parts | DL380 Gen9 system board | DL380 Gen9 power supply | Smart Array P440