Why You Shouldn't Buy Cheap Displayport Cables - The 'death Pin' Can Put Your Gpu At Serious Risk

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ZDNET's cardinal takeaways

• DisplayPort cables are designed to transportation powerfulness to monitors.
• With cheaper options, misaligned pins whitethorn origin powerfulness failures.
• You tin debar this by opting for a VESA-certified DisplayPort cable.

The DisplayPort "Death Pin" issue, aliases much formally known arsenic nan Pin 20 Problem, is simply a well-known manufacturing defect successful which nan past interaction pin connected a DisplayPort cablegram is wired incorrectly. 

This creates a nonstop electrical relationship betwixt your show and graphics card, allowing powerfulness to travel freely betwixt them and causing terrible damage. And successful a clip wherever GPU prices regularly apical $1,500, it's champion to return each precaution to protect your Nvidia aliases AMD paper from becoming a very costly paperweight.

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Fortunately, nan champion solution is arsenic easy arsenic selecting nan correct DisplayPort cable. But location are a fewer things we request to understand first successful bid to spot really nan Death Pin tin wreak havoc connected your gaming PC aliases workstation. 

What is Pin 20?

If you've ever looked astatine nan extremity of a DisplayPort connection, you whitethorn person noticed a bid of small, gold-colored connections lining nan inside. Each is nestled successful a mini notch made to fresh nan corresponding interaction successful your monitor's DisplayPort input, and you'll beryllium capable to count 20 pins (as opposed to HDMI's 19-pin configuration). 

Each pin is designed for a circumstantial function, mostly electrical grounding and audio/video transfer. But arsenic I explained before, nan 20th pin is designed to transportation an electrical complaint betwixt relationship points. 

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This is because a DisplayPort relationship was designed to let you to group up things for illustration docking stations aliases adapters without needing a dedicated powerfulness adapter. However, arsenic of 2013, VESA mandated that each DisplayPort cables must time off Pin 20 disconnected successful "passive" DisplayPort-to-DisplayPort cables owed to expanding reports of malfunctioning cords and devices caused by electrical feedback. 

Why it's called nan 'Death Pin'

When a cablegram is made incorrectly and connects Pin 20 end-to-end, this creates a afloat electrical circuit betwixt your GPU and display. That intends that powerfulness is flowing betwixt them, which tin origin a big of problems, including:

• Short circuits: Both your show and graphics paper will effort to provender powerfulness done nan DisplayPort cable. And since they will person different voltage requirements, this tin quickly overheat your cable, causing an electrical short aliases moreover a fire.
• Backdriving power: Your PC building aliases laptop tin beryllium afloat powered down, but if your show is successful standby aliases slumber mode while plugged into a wall outlet, it tin trickle-feed powerfulness backmost into your computer. This tin origin each kinds of electrical problems that scope from eternally-spinning GPU fans to your PC not being capable to footwear up astatine all.
• Component failure: If a short aliases powerfulness backdrive is powerful capable aliases goes connected for agelong enough, it will physically harm delicate components for illustration RAM sticks, graphics cards, and motherboards. Electricity likes to return nan way of slightest resistance, and tin moreover time off beingness grounds connected circuitry (melting, warping, etc.), bricking your system. Hence, nan nickname.

Symptoms of a bad cable

If you fishy you've sewage a bad DisplayPort cable, location are a fewer things to look retired for:

• Your PC won't aftermath from slumber mode aliases gets stuck successful a footwear loop
• GPU fans and motherboard LEDs stay connected aft shutdown
• Graphical artifacts and surface flickering

How to debar it

Kyle Kucharski/ZDNET

Thankfully, it's beautiful easy to forestall a catastrophe by keeping an oculus retired for charismatic VESA certification logos, which bespeak which brands person submitted products for VESA DisplayPort testing to guarantee that designs do not link Pin 20. Established, well-known brands for illustration Lenovo, Dell, and Anker each regularly taxable DisplayPort cables for verification. 

Also: Your TV whitethorn beryllium search your viewing information - here's really to extremity it (beyond disabling ACR)

And while they whitethorn beryllium a spot pricier, it's worthy paying other for bid of mind. Lesser-known brands often trim accumulation costs by skipping VESA testing, making it easier for defective cables to scope shop shelves and shipping warehouses. 

If you've sewage acquisition pinch electrical repairs, you tin usage a multimeter to cheque whether your cablegram has a afloat Pin 20 connection. If you get a reference aliases acquisition immoderate symptoms of a poorly made cable, disconnect and flip it immediately, and switch it arsenic soon arsenic possible. 

ZDNET's bottommost line

While astir newer graphics cards are designed pinch protective circuitry to forestall powerfulness backdrive damage, utilizing an uncertified cablegram still runs a important risk. Without VESA certification, it's astir intolerable to cognize whether Pin 20 is connected earlier you link it. And electrical problems tin origin severe, cascading harm almost instantly. 

But choosing VESA-certified DisplayPort cables from reputable brands intends a protection guarantee and keeps your workstation aliases gaming PC from becoming landfill fodder.