Price Drop [Anonymous Shipping Included] Unopened GPU Riser Card 6-Piece Set

Price reduced further on 3/20 to ¥300, and again on 4/9 to ¥200.
This is a set of 6 riser cards for mining.

I purchased this 6-piece set new from Amazon, but they ended up unused and stored indoors. The riser cards are advertised as high quality, and the ability to directly supply power via the 6-pin connector on the board is a reassuring feature.

All items are unopened, so there are no damages from use. However, please consider them as junk. I cannot offer exchanges or refunds even if some or all of them do not work due to defects or compatibility issues (this is why I am selling them at a low price).

Price reductions will only be made at my discretion as time passes since listing. I will not respond to requests for price reductions or comments.

Below is a reproduction of the product description from when I purchased it:
Brand: Dr.meter
Product Name: PCI-E Express Extender Card USB 3.0 PCI-E 1X to 16X Expansion Riser Card for Mining Bitcoin Mining 60cm Extension Cable, Set of 6
◆About this product
[Wide Compatibility] Compatible with 1X, 4X, 8X, 16X PCI-E slots, 1-16X and 16-16X. Safer, more efficient, and practical!
[Safe and Stable Power Supply] Equipped with integrated high-quality inductors and solid capacitors, achieving a high power conversion efficiency of 95%. Features overcurrent protection for safer and more stable power supply to the graphics card.
[Latest 6PIN Interface] Independent power supply to the graphics card, achieving a peak current of up to 16A. This thoroughly solves the problem of insufficient power and reduces the load on the motherboard.
[Gold-Plated PCI-E Connector] Uses gold-plated PCI-E connectors with good durability and conductivity, and multi-layer shielded wires, ensuring that the signal does not weaken even with connections up to 3 meters.
[Slot with Fixing Clip] The slot comes with a convenient fixing clip, making the installed graphics card more stable and preventing it from loosening and falling out.
・Package Contents
PCI-E 16X Riser Board x 6
PCI-E 1X Adapter Card x 6
USB 3.0 Cable x 6 (60cm)
6-pin PCI-E Power - 15-pin SATA Power Cable x 6
User Manual x 1