針對連接器產品，UL 的測試標準為 UL 1977，相關標準簡介請參照下方資料。
UL 1977 常見檢測項目為 Sec.14-Sec.21，共計8項，分別為
Sec.14 Mold Stress Relief Test
Sec.15 Overload Test
Sec.16 Temperature Test
Sec.17 Dielectric Voltage-Withstand Test
Sec.18 Resistance To Arcing Test
Sec.19 Conductor Secureness Test
Sec.20 Flammability Test
Sec.21 Grounding Impedance Test
UL 1977 常見檢測項目為 Sec.14-Sec.21，共計8項，分別為
Sec.14 Mold Stress Relief Test
Sec.15 Overload Test
Sec.16 Temperature Test
Sec.17 Dielectric Voltage-Withstand Test
Sec.18 Resistance To Arcing Test
Sec.19 Conductor Secureness Test
Sec.20 Flammability Test
Sec.21 Grounding Impedance Test
