diff --git a/usb_cables.c b/usb_cables.c
index 49f52fa..fdb8672 100644
--- a/usb_cables.c
+++ b/usb_cables.c
@@ -5216,7 +5216,7 @@ bool usb_cables_test_pins(const struct usb_pin_t* pin1, const struct usb_pin_t*
 			// cross talk, noise, and capacitance are a pain to correctly get rid off
 			// the result is not perfect, but often checking both directions eliminates false positives
 			bool connected = true;
-			for (uint8_t pattern = 0; pattern < 6 && connected; pattern++) { // the pattern is just a sequence on high/low
+			for (uint8_t pattern = 0; pattern < 4 && connected; pattern++) { // the pattern is just a sequence on high/low
 				// set alternatively high and low on one pin, and check level on the other pin
 				gpio_set_mode(to_port, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, to_pin); // first pull to remove capacitance
 				if (0 == pattern % 2) { // test if high level is detected
@@ -5226,7 +5226,7 @@ bool usb_cables_test_pins(const struct usb_pin_t* pin1, const struct usb_pin_t*
 					gpio_set(to_port, to_pin); // pull up
 					gpio_clear(from_port, from_pin); // set low
 				}
-				if (USB_PIN_TYPE_POWER == pin_from->type) {
+				if (USB_PIN_TYPE_POWER == pin_from->type || USB_PIN_TYPE_POWER == pin_from->type) {
 					sleep_us(1200); // wait to cancel capacitance (10 nF, as used on VBUS in C plug)
 				} else {
 					sleep_us(10); // wait to settle