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HP 800W Flex Slot Hot-Plug Power Supply for ProLiant Gen9 (720479-B21 / 754381-001) 720479-B21 75438

800W Flex Slot hot-plug power supply for ProLiant Gen9 servers, part numbers 720479-B21 and 754381-001.

✓800W power output
✓Flex Slot hot-plug design
✓For ProLiant Gen9 servers
✓Server power supply module

●In StockSKU: RK-E20W2JCP

💻 Product Overview

This is an 800W Flex Slot hot-plug power supply for ProLiant Gen9 servers. It is built for administrators maintaining or expanding the power capacity of compatible server systems, with hot-plug support that allows a module to be swapped while the server stays running.

✨ Key Features

800W output: Delivers 800W of power for ProLiant Gen9 servers.
Flex Slot design: Fits the Flex Slot bay of compatible ProLiant Gen9 systems.
Hot-plug support: Lets the module be replaced while the server remains powered.
Server power module: Serves as a replacement or additional power supply unit.

🇱🇧 Why Buy from Technodel?

🚚 Delivery Across Lebanon — 1-3 business days to all regions
🛡️ Warranty — as stated on this product page, plus 30-day returns with a full refund
💬 WhatsApp Support — ask us anything before or after you order
💵 Cash on Delivery — pay when the order reaches you

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❓ Common Questions

Real questions customers ask about this product — delivery, warranty, payments & compatibility.

Is this product available in Lebanon?▾

Yes — it is available at Technodel with delivery across all of Lebanon: same-day to Beirut, Sour, Tripoli and surroundings, and 1–2 days to every other region.

Where does Technodel source this product?▾

Technodel sources from established suppliers in Lebanon. The product page states its condition and its warranty, and compatible parts are labelled as compatible.

What warranty comes with this product?▾

Warranty terms are stated on each product page. Where a manufacturer warranty applies, warranty support is handled through Technodel.

How can I pay for this product?▾

Technodel accepts cash on delivery, Wish Money transfer, and cryptocurrency (USDT, BTC, ETH). Delivery is a flat $4 anywhere in Lebanon, free on orders of $500 or more.

Is this power supply enough for my PC build?▾

Add your CPU + GPU power draw plus ~30% headroom. A quality 650–750W 80+ Gold unit covers most single-GPU builds; high-end GPUs (RTX 4080/4090) typically want 850W+. Modular units ease cable management.

What's the difference between modular and non-modular PSUs?▾

Fully modular PSUs attach only the cables you need — tidier builds. Semi-modular fixes essential cables but frees the rest. Non-modular is cheaper but all cables are fixed.

Need another answer? Message us on WhatsApp +961 3 659 872 or read our FAQ.