We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black sleeved 34 cm EPS 8-pin to 8-pin (4+4) internal power cable

Alrhso 5478THYU3163 8-Pin EPS to 8-Pin EPS Internal Power Cable 34 cm

SKU CH-VKE1-PMB5K

Converts a PCIe 8-pin PSU output to a detachable CPU 8-pin (4+4) or 4-pin motherboard connector using 18AWG sleeved cable 34 cm long

  • Cable length3 in (7.62 cm)
  • First connector8PIN EPS
  • Second connector8PIN EPS
  • Product colorBlack
  • Details5478THYU3163, 5478OMZS7223, 10 g, Alrhso
  • Converts PCIe 8-pin to CPU 8-pin (4+4 detachable) for flexible motherboard compatibility
  • 34 cm length with 18AWG tinned copper wire ensures reliable power delivery
  • Detachable 4+4 design adapts to both EPS 8-pin and ATX 4-pin sockets
  • Sleeved polyester fiber construction protects wiring inside the case
  • Strictly for motherboard CPU power — not compatible with graphics cards

8-Pin EPS Extension Cable

The Alrhso 5478THYU3163 is a 34 cm internal power cable that connects an ATX power supply 8-pin output to a motherboard EPS 8-pin or 4-pin input. Builders extending a short CPU power lead or converting a PCIe 8-pin socket to an EPS-12V connector will find it useful. The detachable 4+4 design fits both 8-pin and 4-pin motherboard headers. It is not for graphics cards; inserting a GPU will cause damage.

Practical Limits of the EPS Interface

The cable uses 1007-18AWG tinned copper wire rated for the EPS-12V specification. Length is fixed at 34 cm, so it only bridges short gaps between PSU and motherboard. It cannot replace a missing PSU 8-pin output, and it does not add extra power phases. Polarity follows the standard EPS pinout; reversing the connectors is not possible.

Installation and Common Issues

Route the sleeved cable through the case grommet and press the male 4+4 connector firmly until the latch clicks. The split 4+4 section separates by hand for 4-pin boards; keep the unused half clear of moving fans. The only common error is plugging the female end into a GPU instead of the PSU, which the maker warns will damage the card.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $19.99
Pricier than about 61% of the 7,839 comparable items (median $14.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAlrhso
Model name5478THYU3163
Product colorBlack
Ports & slots
First connector8PIN EPS
Second connector8PIN EPS
Size & build
Cable length3 in (7.62 cm)

Questions about this item

Should I pick the 34 cm cable or a longer version for my build?

Only the 34 cm (13.3 in) length is listed for this model. Choose it when the PSU and motherboard EPS sockets are close together; a longer cable would add slack you do not need.

What does the 18 AWG wire gauge mean once the cable is installed?

The 1007-18AWG tinned copper conductors are rated for the current an EPS-12V CPU connector carries, so voltage drop over 34 cm stays negligible for desktop and server CPUs.

How does the PCIe 8-pin female to CPU 8-pin (4+4) male interface work in practice?

One end plugs into an 8-pin PSU output; the other splits into 4+4 pins that fit either an 8-pin EPS or a 4-pin P4 motherboard socket, but the cable is not wired for graphics cards.

More in Internal PSU & Riser Cables

Similar items