Carefully use the USB patch panel to check 40% of the failed

Today's patch panels have changed from traditional styles to their own USB interfaces. This small shift has brought many conveniences to life, but the inspections of relevant departments have found that such patch panels have security risks.

Recently, the Shanghai Municipal Quality Supervision Bureau conducted a quality supervision and inspection on the power adapter (plug-in board) with USB interface for the production, sales and e-commerce platform sales in Shanghai. A total of 20 batches of power adapter products with USB interface were sampled. The test found that there are 8 unsuccessful projects in 8 batches of products, and the overall pass rate is about 60%.

The withstand voltage is one of the items of this sampling test, that is, the electric strength resistance item after the sample is wet heat treated. There are two unqualified products in this project, namely:

1. The Qingfeng brand QF-308K four-position switch USB converter produced by Cixi Qingfeng Electronics Co., Ltd. is 1.8 meters;

2. The OPPLE brand main switch produced by the nominal Op Lighting (Zhongshan) Co., Ltd. has three five holes and three USB 1.8 meters.

The eight unqualified samples all have the same unqualified items, namely the electrical clearance, creepage distance and insulation penetration distance. They are:

1. The Qingfeng brand QF-308K four-position switch USB converter produced by Cixi Qingfeng Electronics Co., Ltd. is 1.8 meters;

2. The PHILIPS brand Philips extension cord socket produced by Guangzhou Yuda Electronics Co., Ltd.;

3. The OPPLE brand main switch produced by the nominal Op Lighting (Zhongshan) Co., Ltd. has three five holes and three USB 1.8 meters;

4. The branded 9-fold safety socket produced by Shenzhen Mani Electric Industrial Co., Ltd.;

5. The ORICO brand desktop USB intelligent digital power supply terminal board produced by Shenzhen Yuanchuang Times Technology Co., Ltd.;

6. The brand-name anti-shock safety socket produced by the nominal Tongling Technology Group Co., Ltd.;

7. PHILIPS brand Philips power converter produced by Wagner Sound (Shanghai) Trading Co., Ltd.;

According to reports, consumers use the mobile phone while charging the mobile phone, and then there is an electric shock. This is because the electrical clearance has not reached the limit, or is not big enough.