Coaxial Power D-Sub Solder Cup Coaxial Power D-Sub Solder Cup Contacts with Mixed or Full Layout
The Coaxial D-Sub have like the Power D-Subr replaced the two rows in a Standard Density connector with a coaxial contact that take up about the same size as the two rows of signal contacts. The Coaxial D-Sub is exactly the same size as the Standard Density connector but instead of example 9 positions of signal pins it has 2 power contacts , or instead of 37 positions of signals it has 8 coaxial contacts.
The Impedance for the coaxial contacts are 50Ω or 75Ω
Antenk's Coaxial D-Sub connectors are available in 5 standard shell sizes with 23 multiple contact arrangements. These reliable, robust combination d-sub connectors allow a combination of signal and coaxial contacts in cable mount, vertical board mount & right angle board mount termination type variations.
Available in 5 standard shell sizes with 23 multiple contact arrangements: 1W1/ 2V2 /2W2 /3V3/ 3W3/ 5W1/ 5W5
/ 7W2/ 8W8/ 9W4/ 11W1/ 13W3/ 13W6 /17W2/ 17W5 /21W1/ 21W4/ 24W7/ 25W3 /27W2/ 36W4/ 43W2/ 47W1
Coaxial D-Sub Connector, Coaxial D-Sub with Mixed Layout, Coaxial D-Sub with Mixed with Full Layout,Coaxial D-Sub Male, Coaxial D-Sub Female ShenZhen Antenk Electronics Co,Ltd , https://www.antenksocket.com
Haimeidi H7 three generations
Haimeidi H7 is a medium and high-end 4K HD Internet TV box launched by Haimeidi for Chinese TV users. It uses 64-bit 8-core Rockchip micro RK3368 processor, the overall performance is strong, multi-tasking is more than enough, real-time hard solution H.265, with HDMI2.0, truly 4K@60fps video output. Equipped with Google's latest Android 5.1 system, it has high-speed response and unprecedented interactive experience; complete interface, standard USB, SD card. The H7 is equipped with Mango TV genuine resources, and has a wide range of videos including movies, TV shows, variety shows, animations, sports, and operas. There are also featured mango carousels, LiveShow, H265 zones, and 4K movies and 3D movies in movies. The Dolby area can meet the viewing needs of young people, parents, children, fans, and other groups. 
This is the top 64-bit 8-core box on the market. With excellent performance, it won't lag behind for three or five years, and relying on Mango TV's broadcast control platform, it has many exclusive video resources. If you not only care about the content, but also care about the configuration. It is recommended to choose this.
Mi Box
Although the configuration, the millet box is much less than the Haimeidi H7 three generations, but relying on the well-known brands of millet, millet box in the word of mouth is very good, have a higher awareness, and the price is more reasonable, enough to see online video , especially if you like to play games, you can choose this. In addition, Xiaomi's mobile phone, iPhone, iPad, and photos and videos in the computer can be projected onto the TV through WIFI via Xiaomi's unique meter-link function. This is also very convenient. Therefore, the position of the millet box is the most feverish accessory for the Xiaomi phone. . 
Lynx Box
In addition to watching TV, Lynx's biggest feature is its ability to shop online, which is equivalent to a TV shopping device. Tmall Box integrates shopping systems such as poly-bargaining, Taobao, and Tmall. They can sit in the living room and provide a one-stop lifestyle shopping service, including Tmall Supermarket and Taobao. A large number of TV discount products can be purchased with one click, and utilities can also be paid. Coal costs. However, Tmall's box is the system of Alibaba Cloud OS. Some time ago, radio and television limited the installation of other applications to Alibaba Cloud. Therefore, users are still careful to purchase it. 
However, if you don't care about your own application, but also like shopping, choose Yunyun YunOS system anyway, this can bring you a convenient shopping experience on TV.
Transmit Radio Frequency Signals
The Coaxial D-Sub with Mixed Layout mixes both coaxial contacts and signal contacts in the same connector. For example the same size as a 15 position Standard Density D-Sub you can have what we call a 7W2, which means there is 7 contacts where 2 of them are coaxial contacts, which means there are 5 signal contacts, so 5 signals and 2 coaxial. See the Layout in the Tech Specs on the bottom, there are a lot of combinations of the Mixed Layout alternative.
Features
Coaxial d-sub for a variety of applications in cable mount.
Signal contacts come pre-loaded. Coaxial contacts supplied - Not Pre-Loaded.
Materials
Shell: Steel, nickel plated
Insulator: PBT + 30% fiber-glass - Black, U.L. rated 94V-O
Contacts: Brass - Gold flash over nickel
Notes
Panel Cut-Outs
5W1 = Standard 9 Pin Shell
3W3 / 3W3K / 7W2 / 11W1 = Standard 15 Pin Shell
5W5 / 9W4 / 13W3 / 17W2 / 21W1= Standard 25 Pin Shell
8W8 / 21WA4 = Standard 37 Pin Shell
Other Contact Arrangements Available Upon Request.
As you and I grew up in the new era, we experienced the heyday of cable television and saw the sudden emergence of smart TVs and Internet TV boxes. The box provides the cheapest solution for saving ordinary LCD TVs and old-fashioned TVs and has an irreplaceable role. Because of this, TV boxes flourish, and in a dazzling array of TV boxes, how do we choose? Following the author's recommendations based on market reputation, recommend several good TV boxes, which can be considered when purchasing.
If you are a "rice noodle", have many millet products, and like their own DIY, it is recommended to choose the millet box.