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Reddit mentions of StarTech.com Dual 4K Thunderbolt 3 Docking Station - Windows & Mac - 15W Power Delivery DisplayPort & TB3 Laptop Dock (TB3DKDPMAW), Gray, No Charging | 2X USB | 1x DP, TB3
Sentiment score: 1
Reddit mentions: 4
We found 4 Reddit mentions of StarTech.com Dual 4K Thunderbolt 3 Docking Station - Windows & Mac - 15W Power Delivery DisplayPort & TB3 Laptop Dock (TB3DKDPMAW), Gray, No Charging | 2X USB | 1x DP, TB3. Here are the top ones.
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- UNIVERSAL DOCKING STATION: The TB3DKDPMAW laptop dock is compatible with all Thunderbolt 3 equipped MacBook Pro (macOS 10.12 to 10.13.3) and PC laptops (Windows 7 and up).
- EASY INSTALLATION & DEPLOYMENT: Simply connect the TB3 dock to your laptop with included TB3 cable and start working immediately. No time-consuming driver installations are required.
- CONNECT DUAL MONITORS: Hook up two 4K Ultra HD monitors using one DisplayPort port and one Thunderbolt 3 port to easily multitask and view full size high definition graphics and video on each display.
- HIGH RESOLUTION GRAPHICS: View content on your laptop and two 4K HD displays in full resolution (3840 x 2160p or 4096 x 2160p) without any loss of image quality between the monitors. A single 5K display can be connected using a Thunderbolt 3 port.
- CHARGE MOBILE DEVICES: With an always-on Fast-Charge USB 3.0 Type-A port you can connect and quickly charge a tablet or smartphone. The Thunderbolt 3 dock can also deliver 15W of power to a MacBook Pro for slow charging while in sleep state.
- Compatible devices: Acer Aspire Switch,Acer Aspire V Nitro,Asus Zenbook,Asus Zenbook Pro,Dell XPS,HP Zbook,Lenovo Yoga,Macbook air,Macbook pro
Features:
Specs:
Color | gray |
Height | 0.81 Inches |
Length | 6.6 Inches |
Number of items | 1 |
Release date | March 2017 |
Size | No Charging | 2x USB | 1x DP, TB3 |
Weight | 0.884 Pounds |
Width | 2.4 Inches |
Let's go back in time to VGA / DVI! These were great for 1,920*1,200 @ 60 Hz (3.96 Gbit/s). As bandwidth demands grow, Dual Link DVI (2560 × 1600 @ 60 Hz) gets used mostly for 30" screens but since it needs to more pins it doesn't become popular.
Then came DisplayPort 1.1 which had the rough bandwidth equivalent of double of DL DVI, thus it was capable of driving a 4K monitor at 30 Hz. HDMI was originally the same (video wise) as single link DVI, later it got its clock speed doubled and this became a widespread standard so much that most DisplayPort sources are in fact so called DisplayPort++ which are capable of emitting a HDMI signal. When you see passive, cheap DisplayPort-to-HDMI converters, this is why: it's only a plug converter, the signal coming out of the DisplayPort socket is HDMI.
Then came DisplayPort 1.2 which doubled the bandwidth again, thus being able to drive 4K at 60 Hz. It also had the capability to drive multiple monitors from a single connector by feeding that signal into what's called an MST hub. DisplayPort monitors offering daisy chaining contain such an MST hub. Here's how much bandwidth typical resolutions need:
> 1920x1080 (High-definition 1080p) @60hz - 22%
> 1920x1200 @60hz - 30%
> 2560x1440 @60hz - 35%
> 2560x1600 @60hz - 38%
> 3840 x 2160 (Ultra HD 4K) @30hz - 38%
Mix and match to your hearts content up to 100%, four 1080p @ 60Hz etc. But three 2560x1440@60hz won't work, you can't say "it's just a little over 100%".
Then came USB C which is a gigantic mess. It has four high speed links which are able to carry different signals, one of them is a DisplayPort signal. If you get a cheap USB C to DisplayPort device, that's what happens. USB C also contains an USB 2.0 connection which is available while using DisplayPort. Some adapters (Xiaomi has a great one) will give you a DP port and some USB ports.
The same four lanes are capable of running high speed USB, up to 10 gbit/s and also the USB 2.0 connection. It is possible that some USB C docks will have USB 3.0 marked ports which run at 3.0 speed (5gbit/s) when there's no DP cable plugged in and fall back to 2.0 when you plug in the DP cable. Because Macbooks only have USB C lately, adapters and hubs became popular for them. You will notice some have two USB C plugs -- no wonder, they use the high speed link in one for DisplayPort and then they need the other for speedier USB.
Another way to use the four high speed links is to carry Thunderbolt 3. Thunderbolt 3 is a 40 gbit/s bus which contains a mix of various signals, for example, two DisplayPort signals and some PCI Express as well. Since today all panels are of the Embedded DisplayPort variety you need a thing which takes the DP signals off the TB bus. This can be inside the monitor, that's what a Thunderbolt monitor is. 5K monitors with a Thunderbolt connection will happily take two DP signals off the bus to have enough bandwidth (and/or have two DisplayPort inputs). 4K @ 60 Hz monitors (and lower) will take only one signal down. A dock also can take two DP signals off or one DP signal off. To complicate matters, the one DP signal can be fed into an MST hub and so it's possible you are looking at two digital outputs and have no idea how much bandwidth you got. The manual tells it all: if the resolution table says one monitor can be 4K @ 60 Hz but two is 4k @ 30 Hz, that's an MST hub, splitting the bandwidth.
So your options are:
Real big confusion points include:
Ps. HDMI 2.0 is a late comer, many years later than DP 1.2 and it has roughly the same bandwidth as DP 1.2 but as it is a late comer, DisplayPort++ doesn't apply and you need an active converter. You need to read manuals carefully to see what the HDMI port gives you, as many docks and converters won't do HDMI 2.0 they will say "4K" but that's just "4K @ 30 Hz" and not HDMI 2.0 which is required for "4K @ 60z". All in all, venturing into anything above the usual low bandwidth resolutions you need to read all manuals carefully. Acer has a new monitor which, on the cusp of the demise of DVI uses DL DVI to drive a monitor at 144 Hz. Anyone sane would've used a DisplayPort.
This hub has more than one Thunderbolt 3 / USB-C port. It's also insanely expensive.
I think it’s a power or throughput issue. The only time I’ve seen a USB-C hub that has more than one USB-C port always have two USB-C connectors back to the MacBook Pro.
Aluminum Thunderbolt 3 USB Type-C 2016/2017 MacBook Pro Hub Adapter Dongle with HDMI. 1-year Warranty. 40Gbps TB3, 4K HDMI Video Output, USB-C, microSD/SD Card Reader, 2x USB 3.0(Space Gray) https://www.amazon.com/dp/B075ZTQ895/ref=cm_sw_r_cp_api_Kd2IAb8RA23ZD
USB C Hub, Nicetech NT-10 USB C hub 3.1 with Type C Charging Port, 40Gbs Thunderbolt 3, 4K HDMI Video Output, SD TF Card Readers, 2 USB 3.0 Ports for MacBook Pro 2015/2016, USB C hub now in Space Grey https://www.amazon.com/dp/B076Z2C8T6/ref=cm_sw_r_cp_api_ue2IAbDW4P81P
I did find this one hub, which may work. Mixed or insufficient reviews:
USB C Hub,NIGI USB C Multiport Adapter 3.1 with Power Delivery Type C Charging Port ,Micro sd Card Reader,2 USB 3.0 Port,1 USB C Port for MacBook Pro 2015/2016, Google Chromebook 2016 - Silver https://www.amazon.com/dp/B01MY96CWH/ref=cm_sw_r_cp_api_7e2IAb2QZV6XH
You could always try the reverse with this adapter, if the device doesn’t require too much power or speed:
USB C to USB Male Adapter, Acessorz Mini Hi-speed USB C Female (Type-C) to USB A Male (Type-A) Fast Charging Sync Connector Converter OTG Adapter for Laptop / Wall Car Charger with USB A Interface https://www.amazon.com/dp/B075LHXVNV/ref=cm_sw_r_cp_api_mh2IAbRB8Y075
Then there’s always the big guns:
Wavlink Aluminum USB 3.0 Universal Laptop Docking Station & Vertical USB-C Display Dock Dual Video Display HDMI/DVI/VGA, Gigabit Ethernet, 2 USB-C Ports, 4 USB 3.0 Ports, Audio Supports Windows & Mac https://www.amazon.com/dp/B01M7PP31E/ref=cm_sw_r_cp_api_6n2IAbTR3534X
Wavlink USB 3.0 & USB C Ultra HD/5K Universal Docking Station, Dual 4K Dual Video Monitor Display with 2xDisplay Port, 2xHDMI, Gigabit Ethernet, Audio out and Mic in,4 USB 3.0 Port, 2 Type C https://www.amazon.com/dp/B076BG9YVQ/ref=cm_sw_r_cp_api_ek2IAbQW6VHXF
StarTech.com TB3DKDPMAW Thunderbolt 3 Dock - 4K - Laptop Docking Station - Thunderbolt to USB-C / USB 3.0 / Gb Ethernet - Mac / Windows https://www.amazon.com/dp/B01MSEKBNM/ref=cm_sw_r_cp_api_Yk2IAbFJX2S8X
For whatever it's worth, I have this dock plugged to a 4k monitor and it drives it at 60hz no matter which port it's plugged into.