TP-Link TL-WDR4300 v1 -- No 5G LED?

Dusting off an old device and bringing up openwrt-18.06 at ae2a3a1 (2018-10-09) on it, it seems to work like a champ, but I'm not seeing a device or LuCI entry for the 5G LED.

There is not a entry for a 5G LED in


Anyone have a recollection of this?

jeff@Home:/$ ls /sys/class/leds/
ath9k-phy0           tp-link:blue:lan1    tp-link:blue:lan3    tp-link:blue:qss     tp-link:blue:wan     tp-link:green:usb1
ath9k-phy1           tp-link:blue:lan2    tp-link:blue:lan4    tp-link:blue:system  tp-link:blue:wlan2g  tp-link:green:usb2


The 5GHz LED seems not to be controlled via GPIO.