This probably isn't a short; it's more likely a software problem. I can see how they could get into that mess. Remember, with USB, you're only allowed to draw 100mA until you've negotiated with your power source for more, and the power source can say no. USB interface chips enforce this[1], and cut power and send a fault signal if a device pulls too much power.
The Razer Core is basically a docking station. USB-C power is complicated to begin with, and they've set up one of the most complex situations. The way they're using this, the dock is providing power to the laptop, but the laptop is the data master for the USB ports on the dock, which is also providing power to the peripherals. This is something USB-C allows; a device can be a power slave and a USB master at the same time.
This is even more complex. The dock is a source to both sides for power management purposes, but a pass-through for data purposes. This is unusual. I've skimmed the USB-C spec but don't recall that being mentioned. They probably have to MITM the power handshake to get this to work. The laptop is running Windows 10, so they don't control the USB drivers and their power handshake. It's entirely possible that Windows doesn't support that configuration fully.
* Similar problems reported for Anker.[2]
* And CalDigit.[3]
This may be a generic problem with USB-C middle boxes which power in both directions. Some configurations don't work, and this is tough to troubleshoot. The standards compliance test procedure for USB-C hubs [4] doesn't seem to contain this case. The test designers were still thinking "tree with computer at root" in 2015.
[1] http://plugable.com/products/ud-ca1/ [2] http://www.macworld.com/article/3057186/macbook-accessories/... [3] http://caldigit.com/usb-3-1-usb-c-dock/faq.asp [4] http://www.usb.org/developers/compliance/usbcpd_testing/3.1_...
I'm probably harder on input devices than most people, but I have working Logitech and Microsoft mice that are older than Razer itself.
The Zowie FK1+ mouse is great if you like the Intellimouse Explorer. It's ambidextrous and symmetrical. No software to install, you just click the button on the bottom to switch the DPI setting, or some chords when you plug it in to set things like handedness. Works great, can't recommend enough. The only not-amazing part is the scroll wheel for desktop use; the detents are spaced pretty far to ensure accuracy when switching weapons or whatever in a game and work less well when trying to e.g. Rip through source code, but MW acceleration mostly fixes that for me. I'd totally try a Zowie keyboard after being so impressed with their mouse. Zowie is made by Benq, so they've been around for a while and have made professional products for a while too (I love my BL3201PH 32" IPS 4K screen).
To be honest, even if they only ever lasted a couple of years, I'd still buy Razer mice. All non-gaming mice nowadays seem to be awful, cheap crap, and most gaming mice are over-decorated contraptions. Razer mice seem to be the only one they combine good, simple ergonomics with high precision and a quality feel.
https://arstechnica.com/gadgets/2012/11/why-the-hell-does-th...
The Razer Blade Stealth (7500u) has broken Thunderbolt 3 / USB-C support. Most popular devices simply won't work at all, even though they work with other Kaby Lake computers, and even though they work with Razer's own previous Stealth laptop (6500u model).
The Razer Core has broken display software (double vsync lag) which makes it not work properly if you use an external GPU and monitor (which is ostensibly the purpose of the device)
Additionally, the Razer Core's USB ports just flat out don't work. There's a power short of some sort in the internal USB hub, so that if you plug in a device that draws any more than the lowest amount of power, it cycles through a connecting/disconnecting state, looping forever.
All of these are fundamental flaws with the product itself, so you can (and will be asked to) RMA units over and over for eternity, but you'll never get the problem fixed.
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Razer Support has known about all of these issues for months now. There is zero communication coming from Razer -- they won't discuss their design flaws, they won't support their devices, they won't even acknowledge these issues as happening.
When asked directly, the CEO claimed he "wasn't looking at product reliability because we're actually one of the top few in terms of product quality". - https://www.reddit.com/r/razer/comments/5v8zkh/improving_raz... Since Razer's leadership doesn't care about quality at all, I can't imagine the company will ever care either.
At this point, I'm not spending another dime with Razer ever again, and certainly couldn't recommend any one else do so.